SHORT DEFINITIONS 9TH, 10TH ALL SUBJECTS

Important Long Questions of 10th Class for Biology 2016

1. Write two methods to remove extra water from plants.
2. Write the structure of nerve cell?
3. Write the structure of flower.
4. Write down the Mendel’s Law of Independent Assortment.
5. Write down any four achievements of genetic engineering.
6. Write detail of basic steps of genetic engineering.
7. Write any two effects of water pollution.
8. Write a note on water as solvent.
9. Write a note on the male reproductive system of rabbit.
10. Write a note on structure and location of lungs.
11. Write a note on spinal cord?
12. Write a note on pollination.
13. Write a note on introduction of biotechnology.
14. Write a note on Halophytes?
15. Write a note on Development and Structure of Seed.
16. Write a detailed note on the kidney disorders problems.
17. Write a detail note on cartilage with respect to structure, composition and types.
18. Write a detail and extensive note on urbanization.
19. Write a detail account on components of human skeleton.
20. Write a brief note on human fore brain.
21. Why do we consider that over population is a global problem?
22. What type of tissues constitutes the human skeleton?
23. What is vegetative propagation?
24. What is Urinary System of Humans and explain the structure of Kidney.
25. What is thymosin?
26. What is the relation between genes and chromosomes? Write a note on chromosomes.
27. What is the net gaseous exchange from leaves during day and night times?
28. What is the importance of medicinal drugs? Write a note on sources from which drugs are obtained?
29. What is symbiosis?
30. What is Osmoregulatory function of kidney?
31. What is natural selection? Explain the Mechanism of evolution natural selection.
32. What is land pollution? Write a detail note on causes, effects and control of land pollution.
33. What is Kidney stone? Write down its causes.
34. What is Germination of Seed? What are the conditions for Seed Germination?
35. What is asexual reproduction? Write a note on spores’ formation.
36. What is artificial vegetative propagation? Explain with the help of two processes.
37. What is alternation of generation?
38. What do you understand by the terms tissue culture and cloning?
39. What do you mean by antibiotic resistance?
40. What do you know about genetic engineering? What are the objectives of genetic engineering?
41. What are the bad effects of smoking? Write in detail.
42. What are the associated problems related with drug addiction?
43. State the signs, symptoms, causes and treatments of bronchitis.
44. Make a model to show the action of diaphragm and ribs.
45. Into how many types drugs are classified on the basis of their chemical properties and modes of action?
46. How would you differentiate between osteoporosis and arthritis?
47. How sexual reproduction in flowering plants occurs?
48. How homeostasis occurs in human? Explain.
49. How extra Carbon dioxide, oxygen, water, and other metabolic wastes can be removed by a plant?
50. How do the different parts of the plant body exchange gases with the environment?
51. Give an account of the respiratory disorders in Human Bronchitis and Asthma.
52. Explain vaccines
53. Explain the Watson Crick Model of DNA.
54. Explain the Structure and Function of Eye and Ear.
55. Explain the single cell protein.
56. Explain the male reproductive system of rabbit with label diagram.
57. Explain the incomplete dominance with an example?
58. Explain the disorders of eye.
59. Explain global Warming and acid rain?
60. Explain five components of coordination process.
61. Explain different steps of Nitrogen cycle?
62. Explain competition and predation.
63. Explain biogeochemical cycles
64. Explain antagonism in muscle action taking biceps and triceps at example.
65. Discuss the functions of pituitary glare in detail.
66. Differentiate pharmacology and pharmacy
67. Different mechanisms for the homeostasis in plants
68. Describe two Processes of Dialysis briefly.
69. Describe the types of joints and give examples.
70. Describe the major groups of antibiotics.
71. Describe osmotic adjustments in plants.
72. Describe briefly the organs of human nervous system.
73. Describe basic steps of genetic engineering.
74. Describe any four applications of fermentation in daily life?
75. Define synthetic drugs
76. Define parasitism. Explain its types with examples.
77. Define Ozone depletion
78. Advantages and disadvantage of fermenters

 Important Short Questions of 10th Class for Biology 2016

1.     Write the types of Coordination.

2.     Write the role of skin in homeostasis?

3.     Write the names of two types of cartilage.

4.     Write the names of the hormones secreted by ovaries.

5.     Write the names of components of Coordination Action.

6.     Write the functions of hypothalamus.

7.     Write the difference between Elastic cartilage and Fibrous cartilage?

8.     Write name of three main parts of brain?

9.     Write four symptoms of pneumonia.

10.  Write down types of nerves on basis of axon characters?

11.  Write down the symptoms and treatment of Asthma?

12.  Write down the normal chemical composition of urine?

13.  Write down the differences among motor neurons, sensory neurons and inter-neurons?

14.  Write down the difference between inspiration and expiration?

15.  Write down the cause of paralysis?

16.  Write down function of coordinator?

17.  Write down examples of response?

18.  Write about contribution of Ali ibn-e-Sina about eye?

19.  Write a note on Autonomic Nervous System.

20.  Why transpiration does not take place at night?

21.  Which hormones are secreted by glands? What functions are controlled by these hormones?

22.  Which drugs are taken in the epilepsy?

23.  Whet is stimulus? Give examples.

24.  Where fibrous cartilage is found?

25.  What steps are involved in the formation of Urine in the kidneys?

26.  What is voice box?

27.  What is Vegetative Propagation?

28.  What is tubular secretion?

29.  What is trachea?

30.  What is the role of biotechnology in field of medicine and agriculture?

31.  What is the normal composition of urine?

32.  What is the location of kidneys in the body?

33.  What is the function of temporal lobe?

34.  What is the function of sensory neuron and motor neuron?

35.  What is the function of occipital lobe and temporal lobe in human brain?

36.  What is the effect of carbon monoxide present in tobacco smoke?

37.  What is the difference between compact and spongy bone?

38.  What is stem tuber

39.  What is seed dormancy?

40.  What is salutatory Impulse?

41.  What is Rhizomes?

42.  What is renal tubule? What are its parts?

43.  What is Pharynx?

44.  What is peritoneal dialysis?

45.  What is passive smoking? What is its effect?

46.  What is Osmoregulation?

47.  What is nitrification?

48.  What is nicotine?

49.  What is mRNA?

50.  What is modern evolutionary theory?

51.  What is marijuana? What is its source?

52.  What is lung cancer?

53.  What is locomotion and movement?

54.  What is lithotripsy?

55.  What is kidney transplant?

56.  What is greenhouse effect?

57.  What is glottis?

58.  What is Fragmentation?

59.  What is Expiration?

60.  What is difference between breathing and respiration?

61.  What is diaphragm?

62.  What is diabetes mellitus?

63.  What is Corolla? What is its role?

64.  What is cloning?

65.  What is chromatin?

66.  What is cerebrum? What are their functions?

67.  What is Biosphere?

68.  What is biological nitrogen fixation?

69.  What is arteriosclerosis?

70.  What is appendicular skeleton?

71.  What is Amphyema.

72.  What is Alternation of Generation?

73.  What is aerobic respiration?

74.  What do you mean by Hormone?

75.  What do you mean by dominant and recessive alleles?

76.  What do you know about antigens and antibodies?

77.  What are xerophytes? How do they reduce loss of water?

78.  What are vocal cords?

79.  What are various components of Ecosystem?

80.  What are they caused of osteoporosis?

81.  What are the parts of urinary system?

82.  What are the parts of Axial skeleton?

83.  What are the objectives of genetic engineering?

84.  What are the major organs involved in homeostasis in human body? State the roles of each of these organs.

85.  What are the main components of coordination?

86.  What are the homozygous and heterozygous genotypes?

87.  What are the functions of sympathetic system?

88.  What are the functions of parasympathetic system?

89.  What are the effects of deforestation?

90.  What are the causes of hyperthyroidism and hypothyroidism?

91.  What are the advantages of SCP?

92.  What are symptoms of pneumonia?

93.  What are Stomata?

94.  What are renal cortex and renal medulla?

95.  What are pleural membranes?

96.  What are parathyroid Glands?

97.  What are ligaments and tendons? What function do they perform?

98.  What are lenticels?

99.  What are hydrophytes? How they remove excess water?

100.        What are Hinge joints? Give example.

101.        What are halophytes?

102.        What are endospores?

103.        What are different parts of angiosperm seeds?

104.        What are decomposers?

105.        What are antagonists?

106.        What are alveoli?

107.        What are Adrenal Glands?

108.        What are acid rains?

109.        Types of joints

110.        Symptoms of Rheumatoid arthritis

111.        Sources of variations

112.        Role of skeletal system in body

113.        Name two disorders of nervous system.

114.        Name the types of coordination.

115.        Name the types of coordination in living organism.

116.        Name parts of adrenal gland and their hormones.

117.        Major parts of hind brain and forebrain

118.        In chemical coordination, who act as effectors?

119.        How plants remove metabolic wastes from their body?

120.        How Nitrogen Fixation Occur in nature?

121.        Give advantage and disadvantages of vegetative, Propagation of plants

122.        Function of mucous in human body

123.        Function of hormones Insulin and Glucagon

124.        Function of coordinators in human body

125.        Differentiate between voluntary action and involuntary action.

126.        Differentiate between the modes of nervous and chemical co-ordinations.

127.        Differentiate between stomata and lenticels

128.        Differentiate between spinal and cranial nerves.

129.        Differentiate between renewable and nonrenewable natural resources?

130.        Differentiate between origin and insertion.

131.        Differentiate between negative feedback and positive feedback?

132.        Differentiate between natural and artificial selection.

133.        Differentiate between narcotics and hallucinogens,

134.        Differentiate between inspiration and expiration.

135.        Differentiate between immoveable and moveable joints

136.        Differentiate between ectoparasite and endoparasite.

137.        Differentiate between Acute and Chronic bronchitis.

138.        Difference between homozygous genotype and heterozygous genotype

139.        Describe the target age of epilepsy?

140.        Describe the function of urinary bladder and urethra is human urinary system?

141.        Describe the common disorders of the eye.

142.        Describe briefly Mendel’s contribution in the field of genetics.

143.        Define water pollution.

144.        Define vascular and functional disorders?

145.        Define transpiration.

146.        Define Support and Movement. Give its examples.

147.        Define structure of bone

148.        Define skeleton and endoskeleton.

149.        Define Seed Coat.

150.        Define reflex action and reflex arc.

151.        Define receptors. Name the main receptors in man.

152.        Define pollution. And its effect

153.        Define pollination. Name its types.

154.        Define Parthenogenesis

155.        Define osmosis.

156.        Define osmoregulation.

157.        Define nucleosome.

158.        Define nitrogen fixation. How does it occur?

159.        Define Neuron.

160.        Define nephron

161.        Define Nasal Cavity.

162.        Define mutualism. Give an example.

163.        Define mutation

164.        Define Midbrain

165.        Define liftman Skeleton? Give its types.

166.        Define law of thermodynamics.

167.        Define law of segregation.

168.        Define law of Independent Assortment.

169.        Define is guttation?

170.        Define inhalation

171.        Define goitre

172.        Define goiter.

173.        Define Glomerular Filtrate?

174.        Define global warming.

175.        Define genotype and phenotype.

176.        Define food chain and food web.

177.        Define flexor and flexion.

178.        Define fertlization

179.        Define feedback mechanism?

180.        Define extensor and extension.

181.        Define exhalation

182.        Define epigeal and hypogeal germination

183.        Define effectors

184.        Define ecosystem. Give examples.

185.        Define ecological pyramid

186.        Define double fertilization.

187.        Define Diaphragm.

188.        Define dentrites.

189.        Define deforestation and its effects.

190.        Define cross pollination. How is it brought about?

191.        Define Coordination and give example.

192.        Define Condrocytes?

193.        Define commensalisms. Give an example.

194.        Define Codominance.

195.        Define Cellular Respiration.

196.        Define Bulbs.

197.        Define Budding in Hydra.

198.        Define Biotechnology.

199.        Define Binary Fission.

200.        Define Binary Fission in Unicellular Eukaryotes.

201.        Define ball and socket joint

202.        Define antagonism.

203.        Define a joint? What is their role?

204.        Define a drug. State the types of drugs.

205.        Contributions of Muslim Scientist in Ophthalmology

206.        Compare endocrine and exocrine gland.

207.        Briefly describe the technique of tissue culture.

Important Long Questions of 10th Class for Physics 2016

1.     Write briefly about nuclear fusion reaction.

2.     Write an extensive note on different types of capacitors?

3.     Write a detailed note on OF operation and OR gate.

4.     Write a detail note on NOT operation and NOT gate.

5.     With the help of an activity, show that sound requires material medium for its propagation.

6.     Why optical fiber is more useful tool for the communication process.

7.     When cathode, cathode rays and electrons were discovered? What is thermionic emission? How this process is produced?

8.     When a moving electron enters the magnetic field, it is deflected from its straight path. Name two factors which can enhance electron deflection.

9.     What is wave equation?

10.  What is the importance of acoustics?

11.  What is the audible frequency range for human ear? Does this range vary with the age of people? Explain.

12.  What is noise pollution? Explain that noise is a nuisance?

13.  What is meant by total internal reflection? How it can be explained? What does this process occur?

14.  What is meant by electrostatic potential? Explain. How potential difference between two points is defined?

15.  What is kilowatt hour? How can the cost of electricity consumed in a house be calculated?

16.  What is compound microscope? Draw its ray diagram to determine its magnification?

17.  What is a storage device? What do you mean by primary memory and secondary storage devices?

18.  What features make better wiring system of house hold electricity?

19.  What do you understand by the term mutual induction? Name and define SI unit and mutual inductance.

20.  What do you mean by the term intensity level of the sound? Nance and define the unit of intensity level of sound?

21.  What do you known about natural radioactivity? Explain it briefly.

22.  What do you know about digital quantities and digital electronics?

23.  What do you know about ADC and DAC?

24.  What are ultrasound or ultrasonic? How these can be used in daily life?

25.  What are spherical mirrors? Into how many types these are divided?

26.  What are magnetic effects of steady current?

27.  What are binary variables? How you can explain these variables?

28.  What are analogue quantities and analogue electronics?

29.  Waves are the manes of energy transfer without transfer of matter. Explain.

30.  W hat is meant by accommodation? Explain the mechanism of accommodation in human eve?

31.  Show that the circuit given as below acts as OR gate.

32.  Show that the circuit given as belong acts as AND gate.

33.  Name the factors which can enhance thermionic emission.

34.  How will you explain the reflection of light by spherical mirror? Show it with the help of activity.

35.  How will you explain the nature and properties of different radiations?

36.  How transmission of electrical signal through wires in happened?

37.  How electroscope can be charged by electrostatic induction and conduction? For what purposes electroscope is used?

38.  How current in measured? Which instruments are used to measure the current?

39.  How can you measure the speed of sound by Echo Method? What factors can affect the accuracy of this method?

40.  Give three reasons to support the evidence that cathode rays are negatively charged electrons.

41.  Explain Weber-Fechner law

42.  Explain the structure of llama eye?

43.  Explain the reflection of water waves reference to ripple tank

44.  Explain simple harmonic motion

45.  Explain reflection of sound

46.  Explain in detail fission reaction.

47.  Explain D.0 motor

48.  Explain coulombs law of electrostatic and its mathematical form?

49.  Explain briefly the transmission of radio waves through space.

50.  Explain briefly Background Radiations?

51.  Explain battery as a current source.

52.  Discuss the applications of electrostatics.

53.  Determine the equivalent resistance of series combination of resistors.

54.  Describe the uses of radioisotopes in different fields?

55.  Describe the direction of an induced EMF in a circuit. How does this phenomenon relate to conservation of energy?

56.  Define specific resistance and derive its formula

57.  Define natural radioactivity

58.  Define CBIS

59.  Define atomic number and mass number

60.  Define a relationship between speed, frequency and wavelength of a wave.

61.  Characteristics of beta particles

Important Short Questions of 10th Class for Physics 2016

1. Write the equation of the transformer?
2. Write the characteristics of parallel combination of resistors.
3. Write advantages of parallel circuits.
4. Write a note on fuse?
5. Why sound waves are called mechanic waves?
6. Why convex lens is called converging lens?
7. Who developed first electric battery?
8. Which type of motion a simple pendulum exhibits?
9. Which two ways are used to connect resistors?
10. Which instruments are used to detect current?
11. Which instrument is used in school laboratories for production of sound?
12. Which instrument is used by doctors for hearing of sounds?
13. Which formula is used to determined magnification of compound microscope?
14. Which device is used for measurement of potential difference across a circuit component?
15. When motion is said to be damped?
16. What safety measures are taken to avoid radiation hazards?
17. What is work of Charles Coulomb?
18. What is wave equation?
19. What is want by isotopes of an element?
20. What is ultrasonic?
21. What is tuning fork?
22. What is the working principal of gold leaf electroscope?
23. What is the relation between electric field lines and electric intensity?
24. What is the main function of eardrum?
25. What is the construction of camera?
26. What is the composition of optical fibers?
27. What is the composition of an electron gun?
28. What is step down transformer?
29. What is spring constant?
30. What is simple microscope?
31. What is SI unit of electric intensity?
32. What is resonance?
33. What is reason of short sightedness?
34. What is OR operation?
35. What is nearsightedness?
36. What is near and far point?
37. What is meant by total internal reflection?
38. What is meant by SONAR?
39. What is meant by refractive index?
40. What is meant by radioactive tracers? How these are useful?
41. What is meant by power of a lens? Write its unit.
42. What is meant by oscillation?
43. What is meant by nuclear transmutation processes?
44. What is meant by loudness? On which factors it depends upon?
45. What is meant by logic operations?
46. What is meant by lens formula?
47. What is meant by endoscope?
48. What is meant by electric field of charge?
49. What is meant by dual nature of light?
50. What is meant by doping?
51. What is meant by defect of vision? What are its types?
52. What is meant by damped oscillations?
53. What is meant by critical angle?
54. What is meant by circuit diagram?
55. What is meant by capacitance?
56. What is meant by audible frequency range?
57. What is meant by amplitude (A) of a body?
58. What is meant by acoustic protection?
59. What is meant by Accommodation?
60. What is magnification of refracting telescope?
61. What is lens? Write its some uses.
62. What is function of switch?
63. What is function of ADC?
64. What is Flemings Left hand rule?
65. What is electrostatics?
66. What is effect of temperature of resistance of conductors?
67. What is direction of movement of charge?
68. What is direction of electric intensity?
69. What is convex lens?
70. What is conventional current?
71. What is compound microscope? Also write its three features?
72. What is circuit breaker w rite the working principle of circuit breaker?
73. What is capacitor? Which type of structure it has?
74. What is a p-n-p and n-p-n transistor?
75. What id depletion region?
76. What do you mean by primary memory and secondary memory?
77. What do you mean by forward biasing?
78. What are Transverse Waves?
79. What are the factors required for the propagation of sound?
80. What are Longitudinal Waves?
81. What are differences between real and virtual images?
82. What are damped oscillations?
83. What are artificial radioactive elements?
84. W hat is prism and angle of prism?
85. State Snells law?
86. State laws of reflection?
87. State Coulombs Law and write down its mathematical formula?
88. Show that the expression for acceleration of a body executing SLIM?
89. Safe level of noise depends on which factors?
90. Ohms law and write its formula
91. Insulators also contain electrons. Why they do not conduct electricity?
92. In which direction positive charge is transferred?
93. How terrestrial telescope is different from a telescope?
94. How static electricity can be generated?
95. How static charges are dangerous?
96. How sound waves can be transmitted?
97. How many types of spherical mirrors are these?
98. How electroscope can be charged?
99. How does stiffness of the spring affect the value of k?
100. How does photograph enlarger work?
101. How distance from the vibrating body is affected to loudness of sound?
102. How damping progressively reduces the amplitude of oscillations?
103. How can we produce a charge in neutral body?
104. Give some properties of ultrasonic?
105. Find the intensity level of whispering sound?
106. Find conductor and insulator
107. Explain safety precautions to radiation
108. Explain radioactive isotops
109. Explain processing
110. Explain data managing
111. Enlist the characteristics of sound.
112. Enlist some use of capacitors?
113. Enlist properties of waves.
114. Enlist few uses of ultrasound or ultrasonic.
115. Do mechanical waves pass through space?
116. Differentiate between regular and irregular reflection.
117. Differentiate between ohmic and non ohmic conductor
118. Differentiate between intensity and intensity level of a sound?
119. Differentiate between information and communication technology
120. Differentiate between audible and inaudible sounds?
121. Differences between nuclear fission and nuclear fusion
122. Describe how total internal reflection is used in light propagating through optical fibers?
123. Define time period. Write the formula for the time period of a simple pendulum?
124. Define the following terms used in refraction?
125. Define telescope. What do you know about refracting telescope?
126. Define Right hand grip rule?
127. Define refraction of light?
128. Define reflection of light
129. Define principal focus?
130. Define pitch and quality of sound
131. Define mechanical waves
132. Define magnifying power
133. Define logic gate
134. Define Joules law. Also write its equation
135. Define intensity of sound.
136. Define Hookes Law. Give its expression.
137. Define gold leaf electroscope. Draw its diagram?
138. Define focal length (f)?
139. Define farad?
140. Define EMF of the source?
141. Define electromotive force and its formula
142. Define electric field intensity?
143. Define dielectric
144. Define crest and Trough.
145. Define carbon dating
146. Define capacitor?
147. Define amplitude.
148. Can sound waves travel through vacuum?
149. At a certain temperature on which factor resistance depends

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Computer Studies Short Important Questions Guess Paper 10th Class 2016

1.     Compare a flowchart and an algorithm.

2.     Define a nested loop.

3.     Define constant.

4.     Define filling of an array.

5.     Define graphics.

6.     Define loop control variable.

7.     Define pixel.

8.     Define the Palette.

9.     Describe the SCREEN statement.

10.  Describe the use of subscripted variable in array.

11.  Develop a program that prints the sum the even number from 30 to 50.

12.  Differentiate a variable and a constant.

13.  Differentiate BASIC commands and statements.

14.  Differentiate between a variable and constant.

15.  Differentiate between BASIC Command and statements.

16.  Differentiate between data file and program file.

17.  Differentiate between runtime errors and logical errors.

18.  Differentiate between single-precision variables and double-precision variables.

19.  Differentiate between variable and constant?

20.  Distinguish between Formatting Toolbar and Standard Toolbar.

21.  Explain array manipulation.

22.  Explain the use of text mode in BASIC?

23.  For what purpose RUN Command is use in BASIC?

24.  Give the purpose and format of INT function.

25.  Give the purpose and format of SQR function.

26.  Give the purpose and syntax of DELETE command.

27.  Give the purpose and syntax of LIE command.

28.  Give the purpose and syntax of LOAD command.

29.  How modulus and integral division is use in BASIC?

30.  How to fill the Data in one dimensions array?

31.  How to Load a saved programme in BASIC?

32.  Is it necessary for an algorithm to solve problem in finite number of steps? If ye why?

33.  List steps that should be followed to solve a problem

34.  Make a table of Logical AND Operator.

35.  State the use of random access method.

36.  What are parameters?

37.  What are reserved words or keywords?

38.  What are runtime errors?

39.  What are the built-in Functions?

40.  What are two dimensional arrays?

41.  What do you mean by built in functions?

42.  What is a LET statement?

43.  What is a string variable?

44.  What is an algorithm?

45.  What is Analysis? Describe its importance in solving problem.

46.  What is control variable?

47.  What is debugging?

48.  What is desk checking?

49.  What is direct mode?

50.  What is documentation?

51.  What is flow chart?

52.  What is Indirect Mode?

53.  What is INPUT distance?

54.  What is mean by syntax of a programming language?

55.  What is meant by “Document the programme”?

56.  What is meant by coding?

57.  What is meant by conditional transfer of control?

58.  What is meant by DIM statement?

59.  What is meant by filling of an array?

60.  What is meant by implement the program?

61.  What is meant by logical errors?

62.  What is meant by manipulation of array?

63.  What is meant by subprograms?

64.  What is pixel?

65.  What is string variable?

66.  What is the difference between SPC and Space function?

67.  What is the purpose of DRAW statement?

68.  What is the purpose of SIN function?

69.  What is the purpose of TAB Function?

70.  What is the purposes of ERR and PERL variables?

71.  Why array is calls subscripted variable?

72.  Why is DIM Statement used to declare array?

73.  Why logical errors occur?

74.  Write an algorithm to find the factorial of a given number.

75.  Write down the function of IF THEN statement.

76.  Write down the function of KILL command

77.  Write down the purpose and syntax of CIRCLE statement.

78.  Write down the steps for closing the document.

Important Long Questions of 9th Class for Physics 2016

1. Write kinetic molecular model for solids, liquids and gases
2. Write a note on meter rule
3. Why is polystyrene cup used in this experiment instead of a metallic calorimeter?
4. When a gun is fired, it recoils. Why?
5. What is thermal conductivity? On what factors rate of flow of heat depends upon? Explain.
6. What is the importance of large specific heat capacity of water?
7. What is the difference between scalar and vector quantities?
8. What is plasma? How it from is formed? Give some examples?
9. What is mercury barometer? Describe its construction and working
10. What is meant by scientific notation? Explain with examples
11. What is kinetic molecular model of matter?
12. What is density? How to measure density
13. What is centrifugal force? Explain
14. What is a stop watch? Write its types and give least count of each of them? Describe the method of use of stop watch
15. What is a screw gauge? Give its construction and working.
16. What is a greenhouse? How does the temperature in a greenhouse can be maintained? How Green house effect is produced in nature
17. What effect is expected if in instead of single cup, double cups (one into the other) are used and if the cup is covered by a lid of Styrofoam as well?
18. What do you know about young’s modules? How would you determine young’s modules of an object?
19. What are the factors on which rate of flow of heat depends?
20. What are the consequences and applications of radiation?
21. The density of air is 1.3Kgm-3.Find the mass of air in a room measuring 8m x 5m x 4m.
22. State Archimedes Principle. Derive its mathematical relation
23. State and explain the secure condition for equilibrium
24. State and explain Resolution of Forces in its rectangular components
25. State and explain law of conservation of momentum
26. State and explain Archimedes Principle
27. State and demonstrate Pascal’s law
28. On which principle Hydraulic press works? Explain the working of Hydraulic press.
29. On what factors emission and absorption of radiation depends
30. If the same amount of heat is transferred to an equal mass of water and lead metal which substance will be hotter?
31. How would you find the specific heat of solid?
32. How various surfaces can be comparing by a Leslie cube? Explain it.
33. How much ice will melt by 50000 J of heat? Latent heat of fusion office=336000 Jkg-1 (150g)
34. How much heat is required to increase the temperature of 0.5 kg off water from 10°C to 65°C?
35. How many types of thermal volume expansion are? Explain
36. How many scales of temperature are Unique there in use?
37. How many are the types of motion Explain
38. How is precision related to the significant figures in a measured quantity
39. How different sources of energy are harmful to environment also explain to prevent these hazards?
40. How convention current in air forms land and sea breezes and also help in gliding of gliders and birds?
41. How can you find the value c unknown weight by using the above apparatus and the graph you have drawn?
42. How can you find the high temperature of a metal piece of known mass and known specific heat by the method of mixture?
43. How can the mass of Earth be determined?
44. How can a hot air balloon carrying a lot of load rise in the air?
45. Find the perpendicular components of a force of 50N making an angle of 30° with x-axis
46. Find the magnitude and direction of a force whose x- component is 12N and y-component is 5N
47. Find the latent heat of fusion of ice with the help, of simple experiment
48. Find the density of the above object by using spring balance and compare the result with that you have already found by physical balance
49. Find the acceleration from speed-time graph shown in figure
50. Explain vernier constant?
51. Explain the working of Hydraulic press
52. Explain the renewable energy sources
53. Explain the changes in weather due to the variation in atmosphere pressure
54. Explain Hooke’s Law
55. Explain green house effect
56. Explain base units
57. Determine the orbital speed of artificial satellites
58. Determine the mass of using Newton’s law of gravitation
59. Describe the processes involved to produce energy from fossil fuels
60. Describe the importance of in daily life
61. Describe some practical applications force in our daily life
62. Describe how a vector quantity is represented? Explain with examples
63. Describe an experiment to find the centre of gravity of an irregular shaped thin lamina
64. Derive the second equation of motion for uniformly accelerated rectilinear motion
65. Derive the first equation of motion for uniformly accelerated rectilinear motion
66. Define vector. Also explain the vector representation
67. Define translator motion. Also state its three types
68. Define thermal kinetics with the help of formulas
69. Define the specific heat capacity
70. Define specific, heat. How would you find the specific, heat of a solid?
71. Define rotator motion. Give examples
72. Define rate of flow of heat Derive the relation for thermal conductivity of a solid
73. Define potential energy
74. Define plasma physics
75. Define momentum. Mathematically prove the relation between force and momentum
76. Define mechanics
77. Define kinematics
78. Define centripetal force and prove it
79. Define and explain Newton’s second law of motion.
80. Define and explain latent heat of fusion
81. Convert 50°C on Celsius scale into Fahrenheit temperature scale
82. Calculate the power of pump which can lift 200 kg of water through a height of 6m in 10 seconds.
83. Atmospheric pressure and how to measure it
84. At what attitude the value of g would become one fourth than to the surface of the earth?
85. As soon as the hot solid is put in the cold water, it reaches the maximum temperature quickly. Give a reason for this.
86. A wooden cube of sides 10cm each has been dipped completely in water. Calculate the up thrust of water acting on it
87. A sprinter completes its 100 metre race in 12s. Find its average speed.
88. A screw gauge has 50 divisions on its circular scale. The pitch of the screw gauge is 0.5mm. What is its least count?
89. A man pulls a block with a force of 300 N through 50 m in 60 s. Find the power used him to pull the block.
90. A man is pulling a trolley on a horizontal road with a force of 200 Newton making 30° with the road. Find horizontal and vertical components of its force
91. A container has 2.5 liters of water at 20°C. How much heat is required to boil the water?
92. A communication satellite is launched at 42000 km above Earth. Find it orbital speed.
93. A chocolate wrapper is 6.7 cm long and 5.4 cm wide. Calculate its area up to reasonable number of significant figures.
94. A car weighing 12 KM has speed of 20ms. Find its kinetic energy
95. A car starts from rest. Its velocity becomes 20 ms-1 in 8 s. Find its acceleration
96. A 50kg man moved 25 steps up in 20 seconds. Find his power each step is 16cm high

 Important Short Questions of 9th Class for Physics 2016

1. Write two advantages and two disadvantages of friction
2. Write the scales of a temperature
3. Write the names of four derived units
4. Write the names of any four forms of energy
5. Write the advantage of banking of the road
6. Write note on Banking of roads
7. Write methods of reducing force of friction
8. Write four types of Physics.
9. Write four examples of vectors
10. Write equation for heat thermal conductivity
11. Write down the importance of evaporation
12. Write down the difference between negative and positive acceleration
13. Write down some main forms of energy
14. Write down advantages and disadvantage of friction
15. Write a principle of moments
16. Write a note on Hydraulic brake
17. Write a note on a lever balance
18. With what force an apple weighing in attracts the earth
19. Why vector quantities cannot be added and subtracted like scalar quantities
20. Why the recoil of the gun is smaller than the velocity of the bullet
21. Why the height of vehicles is kept as low as possible
22. Why the base of a vehicle is made wide
23. Why rolling friction is less than sliding friction
24. Why moon is called Natural Satellite
25. Why law of gravitation is important for us
26. Why is the value of ‘g’ different at different places?
27. Why is the use of zero error necessary in a measuring Instrument?
28. Why is the use of Correction necessary in a measuring instrument?
29. Why gaps are left in railway tracks
30. Why fossils fuels are called non-renewable form of energy
31. Why fossil fuels are called non – reins able form of energy
32. Why does the value of ‘g’ vary from place to place?
33. Why does atmospheric pressure vary with height?
34. Why does a piece of stone sink in water but a ship with a huge weight floats?
35. Why do we need to measure extremely small intervals of time?
36. Why do large numbers of slots are made in radiators
37. Why are sauce-pans made of metals?
38. Where is the centre of gravity of uniform square and uniform triangular sheets?
39. When does a force work? Explain
40. When distance time graph is a straight line, what information does it provide?
41. What will be the tension in a rope that is pulled from its ends by two opposite forces 100 N EACH?
42. What will be the temperature on Kelvin scale of temperature when it is 20°C on Celsius Scale?
43. What role SI units have played h the development of Science
44. What make a sucker pressed on a smooth wall sticks to it
45. What k meant by rest and motion
46. What is velocity of Geo-Stationery relative to earth?
47. What is using of clinical thermometer write its range?
48. What is upthrust?
49. What is up thrust? Give an example
50. What is translatory motion? Give two examples.
51. What is thermal conductivity?
52. What is the used of meter rod
53. What is the principle of flight of rockets and jet engines?
54. What is the law of Inertia?
55. What is the importance of law of conservation of momentum?
56. What is the effect of temperature on evaporation?
57. What is the effect of mass of a freely falling body on the gravitational acceleration?
58. What is the effect of length of the solid on thermal conductivity?
59. What is the direction of motion of the body moving in a circle?
60. What is the difference between stable and neutral equilibrium?
61. What is the difference between sliding friction and rolling friction?
62. What is the difference between Action and Reaction?
63. What is stop watch and how it is useful in measuring short interval of time
64. What is soil erosion?
65. What is power?
66. What is meant by thermometric substance?
67. What is meant by significant figures of a measurement?
68. What is meant by power? Write down unit
69. What is meant by non-renewable sources of light?
70. What is meant by multiples and sub-multiples?
71. What is meant by lower and upper fixed points in a thermometer?
72. What is meant by least count of any instrument?
73. What is meant by land breeze?
74. What is meant by infrared and ultraviolet?
75. What is meant by elasticity
76. What is meant by elastic limit?
77. What is meant by convection currents
78. What is meant by centrifuge?
79. What is meant by anomalous expanse ion of water?
80. What is meant by absolute zero?
81. What is least count of vernier calipers? How can it be calculated?
82. What is its SI UNIT?
83. What is Hook’s law? What is meant by elastic limit?
84. What is heat capacity?
85. What is head to tail rule
86. What is gravitational acceleration?
87. What is dynamics
88. What is difference between axis of rotation and point of rotation?
89. What is coefficient of friction?
90. What is chemical energy? How do we use chemical energy in different forms?
91. What is Bio Mass?
92. What is atmospheric pressure? Explain. Why it decreases as we go up
93. What is an acid meter?
94. What is a satellite?
95. What is a plumb line? What is the use of it
96. What is a measuring cylinder?1
97. What is a greenhouse?
98. What is a field force?
99. What is a “Barometer?”
100. What does it happen the atmospheric pressure at a place falls suddenly
101. What do you mean thermal conductivity or rate flow of heat?
102. What do you mean by the pitch of Screw Guage
103. What do you mean by resultant forces?
104. What do you mean by inter conversion of energy
105. What do you mean by distance and displacement?
106. What do you mean by ‘resolution of vectors?
107. What do you know about variable velocity?
108. What do you know about momentum?
109. What do you know about global positioning system?
110. What did you mean by line of Action of a force and moment Arm?
111. What causes a glider to remain in air?
112. What are various forms of energy?
113. What are thermals? How gliders use thermals to stay in air
114. What are the parameters of equations of motion?
115. What are the applications of Pascal’s law?
116. What are scalars? Write two scalar quantities.
117. What are prefixes? Give some examples measurements in which prefixes are used to express them
118. What are insulators? Give examples
119. What are free electrons?
120. What are factors on which linear thermal expansion depends?
121. What are artificial satellites?
122. Wet clothes dry up quickly when spread. Why
123. Upon what factors the orbital speed of a satellite depend
124. Uniform velocity
125. State the law of conservation of momentum. Explain with examples
126. State the branches of physics
127. State Archimedes principal
128. Sate the principle of floatation
129. On what factors the orbital speed of a satellite depends
130. On what factors rate of emission and absorption of heat from a body depends
131. On what factors pressure of a liquid depends
132. On what factors does work depend upon?
133. Now Newton’s law of gravitation helps it understanding the motion of satellite
134. Normal human body temperature is 98.6°F. Convert it into Celsius scale and Kelvin scale
135. Name the five devices that convert electrical energy into mechanical energy
136. Name five prefixes most commonly used
137. In What pan we place the object of a Physical balance
138. Identify and explain limitations of measuring instruments such as meter rule
139. How will you find out that mass of a body remain uniform very here
140. How various surfaces can be compared by a Leslie Cube?
141. How value of “g” can be finding
142. How the mass of Earth can be determined
143. How temperature determines the direction of flow of heat
144. How many ways of transfer of heart
145. How many mass measuring balance is use? And write the name of mass measuring instrument
146. How is precision related to the significant figures in a measured quantity?
147. How is a vector represented?
148. How head-to-tail rule helps to find the resultant of forces
149. How does oiling the moving part of a machine lowers friction
150. How does heating affect the motion of molecules of a gas?
151. How can you say that gravitational force is a field force?
152. How can you relate a force with the change of momentum of a body?
153. How can you find the efficiency of a system?
154. How can we find mass of moon?
155. How can Ave find the magnitude of a vector from rectangular components?
156. Give the relationship for volume expansion of liquid
157. Give some examples of convection
158. Give an example of a moving body which is in equilibrium
159. Find the magnitude of x-components F, of the force ‘F’ acting parallel to y-axis
160. Explain the impact of greenhouse effect in global warming
161. Explain the impact of green house effect in global warming
162. Explain the behavior of solids on the basis of kinetic molecular model of matter
163. Explain mass energy equation
164. Explain Head-to-tail rule for addition of vector/forces
165. Explain briefly measuring tape
166. Does spirit and water evaporate at the same rate?
167. Differentiate like and unlike forces.
168. Differentiate between transitory
169. Differentiate between torque and couple.
170. Differentiate between stress and strain?
171. Differentiate between speed and velocity
172. Differentiate between positive and negative acceleration
173. Differentiate between non-renewable and renewable sources of energy
174. Differentiate between mechanical stop watch and digital stop watch
175. Differentiate between mass and weight
176. Differentiate between electronic balance and physical balance
177. Determine volume of an irregular shaped object using a measuring cylinder
178. Describe two ways to reduce friction
179. Describe relation of radiation of heat and surface area
180. Describe Fahrenheit scale
181. Derive mathematical relation for 2″ law of motion
182. Define work and write its equation
183. Define watt
184. Define vibratory motion with two examples
185. Define vector and write the name of two vector quantities
186. Define variable speed
187. Define uniform speeds
188. Define translator motion
189. Define torque and write its unit
190. Define thermometer
191. Define thermal expansion
192. Define the terms heat and temperature
193. Define tensile strain. Why it has no, unit
194. Define strain and write its equation
195. Define static friction
196. Define speed example and formula
197. Define specific heat. In which units it is measured
198. Define Solar Cells
199. Define second condition of equilibrium
200. Define scalars and vectors. How vectors can be represented graphically?
201. Define Rigid Body
202. Define Resultant vector
203. Define rest and motion
204. Define radiation
205. Define potential energy and write it formula
206. Define physical quantities
207. Define Neutral Equilibrium
208. Define motion with an example
209. Define mechanical energy and give two examples
210. Define mass of earth
211. Define lower and upper fixed points
212. Define least count
213. Define latent heat of vaporization
214. Define Latent heat of fusion
215. Define Kinetic energy and write equation
216. Define Joule
217. Define Hooks’ law and write its equation
218. Define heat capacity
219. Define gravitational field
220. Define force in term of momentum
221. Define Fahrenheit scale and Kelvin scale
222. Define evaporation
223. Define equilibrium. Explain with examples
224. Define electric energy with two examples
225. Define derived quantities and write the name of two derived quantities
226. Define Convection
227. Define conductors. Give example
228. Define coefficient of thermal conductivity
229. Define coefficient of linear expansion
230. Define chemical energy
231. Define centripetal acceleration
232. Define centre of mass
233. Define centre of gravity
234. Define Brownian motion
235. Define axis of rotation of a body
236. Define average speed and velocity
237. Define atomic physics and nuclear physics
238. Can we use a hydrometer to measure the density of milk

Important Long Questions of 9th Class for Chemistry 2016

1. You have a piece of coal (carbon) weighing 9.0 grams. Calculate the number of moles of coal in the given mass.
2. Write down the important chemical reactions of halogens.
3. Write a short note on Allotropy.2
4. Write a chemical formula?
5. When we dissolve 20 g of NaC1 in1 400 cm3 of solution, what will be its molarity?
6. What is vapor pressure and how it is affected by intermolecular forces?
7. What is the relationship between electro positively and ionization energy?
8. What is the difference molecule and molecular ion?
9. What is molarity and give its formula to prepare molar solution?
10. What is metallic bond? Explain the metallic bonding with the help of a diagram.
11. What is isotope? Discuss the structure of Isotope with suitable examples.
12. What is ionization energy? Describe its trend in the periodic table.
13. What is general principle of solubility?
14. What is electrolytic cell briefly describe its construction and working?
15. What is an isotope? Describe the isotope of hydrogen with diagram.
16. What is a molecule? Write different types of molecules
17. What is a coordinate covalent bond? Explain it with example.
18. What do you mean by shielding effect? Explain its trends in periodic table.
19. What do you mean by blocks in a periodic table and why elements were placed in blocks?
20. What are ionic and covalent compounds?
21. What are Intermolecular forces?
22. What are important physical characteristics of metals?
23. There are 3.01 x 1023 molecules of CO2 present in a container. Calculate the number of moles and its mass
24. Mole is SI unit for the amount of a substance. Define it with examples.
25. How was it proved that electrons are fundamental particles of an atom?
26. How Rutherford discovered that atom has a nucleus located at the centre of the atom?
27. How much NaOH is required to prepare 500cm3 of 0.4M solution?
28. How can a non-spontaneous reaction be carried out in an electrolytic cell? Discuss in detail.
29. How are cathode rays produced? What are its five major characteristics?
30. How are cathode rays produced? Give properties of cathode rays. What conclusion you derive from these properties.
31. Give the five characteristics of colloid?
32. Give the applications of isotopes in the field of radiotherapy and medicines.
33. Give basic postulates of Bohr’s atomic theory.
34. Give at least five characteristics of suspension?
35. Explain the types of covalent bonds with at least one example of each type.
36. Explain Rutherford’s atomic model. Also write observations made by Rutherford.
37. Discuss the important features of modern periodic table.
38. Discuss the construction and working of a cell in which electricity is produced.
39. Differentiate between dilute solution and concentrated solutions with a common example.
40. Describe the trends of electro negativity in a period and in a group.
41. Describe the rules for assigning the oxidation state.
42. Describe the phenomenon of diffusion in liquids along the factors which influence it.
43. Describe the factors which influence the diffusion of liquid.
44. Describe some major applications of radioactive isotopes in our surroundings.
45. Describe Nelson’s Cell for the manufacture of Caustic soda from brine solution.
46. Describe different ways of expressing the percentage composition of a solution.
47. Describe different types of molecules.
48. Define hydrogen bonding. Explain how these properties affect the physical properties of compound.
49. Define Galvanic cell. Briefly describe the construction and working of Daniel cell?
50. Define electroplating. Briefly describe its principle, purpose and procedure.
51. Define electron affinity. Describe its trend in periodic table.
52. Define diffusion, Alkali metals and Alkaline earth metals.
53. Define coordinate covalent bond. How it is formed. Explain with examples.
54. Define Boyle’s Law and verify with an example.
55. Define boiling point and also explain the factors which are affected on it?
56. Define and explain Charles’s Law of gasses.
57. Compare the characteristics of solution, colloid and suspension.
58. Compare any four physical properties of metals and non-metals.
59. Calculate the number of moles, number of molecule atoms present in 6 grams of water.
60. Calculate the number of moles of coal in the given mass.
61. Briefly describe the electrolytic refining of copper.
62. Briefly describe the electrolysis of water.
63. Branches of chemistry.

 Important Short Questions of 9th Class for Chemistry 2016

1. Write two chemical properties of metals and non-metals
2. Write down the names of elements of group 1 with their symbols?
3. Write down electronic configuration of chlorine
4. Write down any two uses of magnesium.
5. Write down any two properties of canal rays
6. Write down any three isotopes of uranium
7. Why we stir paints thoroughly before using?
8. Why the size of atom decreases in a period?
9. Why the ionization energy of Na more than K?
10. Why the gases are compressible?
11. Why the alloys are considered solutions?
12. Why silver and gold are least reactive?
13. Why reactivity of metals increase drown the group?
14. Why platinum is used for making Jewellery?
15. Why noble gases are not reactive?
16. Why magnesium is harder than sodium?
17. Why is vapour pressure higher at high temperature?
18. Why is HF a weak acid?
19. Why ionization energy Na is less than Mg?
20. Why ionic compounds are easily soluble in water?
21. Why have water polar covalent bonds?
22. Why does sodium forma chemical bound with chloride?
23. Why does not the suspension form homogeneous mixture?
24. Why does ice float on water?
25. Why do you mean by malleability?
26. Why do atoms react?
27. Why chlorine can accept only 1 electron?
28. Why calcium is more electropositive tan to magnesium?
29. Why are the densities of gases lower than that of liquids?
30. Why are the colloids quite stable?
31. Why are liquids mobile?
32. Why and how elements arranged in a period?
33. Why an iron grill is pointed frequently?
34. Why a solution is considered mixture?
35. Why a covalent bond becomes polar?
36. Which solution is used as electrolyte in Nelson’s cell?
37. Which one of the following solutions is more concentrated: one molar or three molar
38. Which metal is used for metal work?
39. Which is lighter than aluminum of gold?
40. Which form of sculpture exists at room temperature?
41. Which element has the highest electro negativity?
42. When does an electron emit or absorb energy?
43. What you know about Epoxy adhesives?
44. What type of elements have tendency of sharing of electrons?
45. What type of elements from metallic bond?
46. What type of covalent bond is formed in nitrogen molecule?
47. What is the unit of concentration?
48. What is the trend of variation it densities of alkali metals?
49. What is the significance of the symbol of an element?
50. What is the relative atomic mass? How it is related to gram?
51. What is the relationship between evaporation and boiling point of liquid?
52. What is the principle of rusting?
53. What is the oxidation number Carbon in Na2CO3?
54. What is the nature of electrode used in electrolyzing of chromium?
55. What is the nature of charge on cathode rays?
56. What is the maximum capacity of a shell?
57. What is the major difference between a solution and a mixture?
58. What is the difference between Mendeleev’s periodic law and modern periodic law?
59. What is the difference between corrosion and rusting?
60. What is the difference between colloid and suspension?
61. What is the definition of the element according to the Robert Boyle?
62. What is the cause of polarity in covalent bond?
63. What is second ionization energy and how is it represented?
64. What is salt bridge?
65. What is relationship between electro positivity and ionization energy?
66. What is octet rule?
67. What is meant by volume / volume %?
68. What is meant by periodicity of properties?
69. What is meant by Molar Solution? How it is prepared
70. What is meant by mixture? Also give its one example
71. What is meant by metric bond?
72. What is meant by magnesium ribbon and where it use?
73. What is meant by groups and periods in the periodic table?
74. What is meant by density?
75. What is meant by condensation?
76. What is meant by colloid? Give two examples.
77. What is meant by chemical reactivity?
78. What is meant by carbon dating?
79. What is meant by Brine?
80. What is meant by atomic size? Write its unit
81. What is Luther Meyer’s atomic volume curve?
82. What is Lewis Structure Diagram?
83. What is electropositivity? Explain with an example.
84. What is electrolysis?
85. What is diffusion, explain with an example?
86. What is different between steel a stainless steel?
87. What is difference between valiancy any oxidation state?
88. What is difference between valiancy and oxidation state?
89. What is difference between steel and stainless steel?
90. What is difference between diffusion and effusion?
91. What is difference between colloids and suspensions?
92. What is difference between boiling point and evaporation?
93. What is Dielectric Constant?
94. What is corrosion?
95. What is absolute temperature? Write its value
96. What happens to cathode in the galvanic cell?
97. What do you mean by volume?
98. What do you mean by shielding effect?
99. What do you mean by periodic function?
100. What do you mean by metallic character?
101. What do you mean by malleability?
102. What do you mean by groups and periods in the periodic table?
103. What do you mean by condensation?
104. What do you mean by cation and anion? Explain with examples?
105. What did you mean by the Thermal conductivity of the metallic compounds?
106. What are transition metals?
107. What are the salient features of Rutherford’s atomic model?
108. What are the defects of Rutherford atomic model?
109. What are the Defects in Long Form of Periodic Table?
110. What are synthetic adhesives?
111. What are spontaneous and non spontaneous reactions?
112. What are SI units of atomic radius?
113. What are radioactive isotopes?
114. What are intermolecular forces?
115. What are Halogens? Describe the position of halogen in periodic table?
116. What are crystalline solids?
117. What are alkali and alkaline-earth metals?
118. They can cast a sharp shadow of an opaque object if placed in their path
119. State three reasons why do you think air is a mixture and water a compound.
120. State the physical properties of metals
121. Oxidation and reduction proceed simultaneously. Explain with an example.
122. Name the by-products produced in Down’s cell
123. Metals are good conductor of electricity. Why?
124. Ionic compounds are solids justify.
125. In electroplating of chromium, which salt is used as an electrolyte?
126. How you can explain the solute-solvent interaction to prepare a NaCl solution?
127. How to atoms follow octet rule?
128. How oxygen reacts with group II A metals?
129. How non-metals are essential part of our body structure?
130. How many neutrons are present in C-12 and C-13?
131. How is periodicity of properties dependent upon number of protons in an atom?
132. How electroplating of zinc is carried out?
133. How electroplating of tin on steel carried out?
134. How electro negativity does differ from electron affinity?
135. How coordinate covalent bond is formed in the hydronium ion?
136. How can you test that the given
137. How can you prove that angular momentum is quantized?
138. How can you justify the milk is colloid?
139. How can you differentiate between organic and inorganic chemistry?
140. How can you differentiate between molecular formula and empirical formula?
141. How can you define atomic radius?
142. Give two properties of positive rays.
143. Give two properties of neutrons.
144. Give two postulates of Bohr’s atomic theory
145. Give the trend of ionization energy in a period
146. Give the reasons: Soft drink is a mixture and water is a compound.
147. Give the Properties of dipole-dipole forces
148. Give the physical properties of sodium and its uses
149. Give the example and formula of mass by volume percent
150. Give the electronic configuration of carbon atom
151. Give the difference between electrolytic cell electrochemical cells
152. Give the characteristics of cathode rays
153. Give the applications of silver
154. Give scope of Bio Chemistry
155. Give properties and uses of gold?
156. Give physical properties of calcium and its uses
157. Give one example each of the use of radioactive isotope in medicine and radio therapy
158. Give experimental verification of Charles’s law
159. Give Characteristics of suspension
160. For what purpose is u-235 used?
161. Find out the mass of 3 moles of oxygen atoms
162. Explain the trend of electron affinity in periodic table
163. Explain the term oxidation on the basis of electronic concept with an example.
164. Explain the term absolute zero
165. Explain the relationship between mass and mole of substance
166. Explain the electronic concept of reduction
167. Explain ductile
168. Explain classical theory of radiation
169. Do you know any element having no neutrons in its atoms?
170. Distinguish between amorphous solid and crystalline solid
171. Differentiate between strong and weak electrolytes.
172. Differentiate between solute and solvent with examples of each
173. Differentiate between shell and subshell
174. Differentiate between Polar and non polar covalent bond.
175. Differentiate between molecular mass and formula mass
176. Differentiate between lone pair and bond pair of electrons.
177. Describe the process that takes place in the electrolysis of molten NaCI
178. Describe at least two necessary conditions for the formation of a covalent bond.
179. Define valiancy
180. Define transition temperature.
181. Define the term allotropy with examples
182. Define symbol and valency with example.
183. Define supersaturated solution
184. Define solubility
185. Define reducing agent.
186. Define quantum theory
187. Define pressure and write its unit
188. Define physical chemistry and biochemistry
189. Define oxidizing agent
190. Define organic chemistry
191. Define nuclear fission reaction
192. Define morality and writes its unit
193. Define malleable
194. Define Ionization energy
195. Define ionic bond
196. Define intermolecular forces
197. Define industrial chemistry
198. Define hydrogen bonding.
199. Define homoatomic and hetroatomic morecule with examples.
200. Define freezing point.
201. Define evaporation. Write the name of factors which effect evaporation
202. Define empirical formula with example.
203. Define electroplating.
204. Define electron electivity
205. Define electrochemistry
206. Define electro negativity
207. Define effective nuclear charge
208. Define dipole interactions. How are they created?
209. Define crystalline solid and give its two examples
210. Define chemical bond
211. Define Boyle’s rule?
212. Define boiling point1
213. Define Biochemistry
214. Define Avogadro’s number
215. Define atomic number and mass number.
216. Define atomic mass unit. Why is it needed?
217. Define atmospheric pressure
218. Define aqueous solution
219. Define Allotropy
220. Can you cool a gas by increasing it volume?
221. Can pure gold be used for making electrical wires?
222. Calculate the number of moles In 84 gram carbon
223. Calculate the number of atoms in 10 grams of Aluminum (Al)
224. A solution contains 50 g of sugar dissolved in 450 g of water. What is concentration of this solution?
225. A patient has goiter. How will it be detected?

Important Short Questions of 9th Class for Biology 2016

1. Write two properties of a good hypothesis
2. Write two aims of classification.
3. Write the major contribution of Carious Linnaeus in taxonomy.
4. Write down two functions of liver.
5. Write down the scientific name of Frog and two characteristics.
6. Write down the role of root hairs in roots of plants.
7. Write down the names of two types, of simple tissues.
8. Write down the names of steps included in Biological method.
9. Write down the name of two diseases caused by minerals deficiency.
10. Write down the name of industries where enzymes are extensively used?
11. Write down the function of Ribosome’s in cell.
12. Write down any two aims of classification.
13. Write down any four deficiency symptoms of vitamin C.
14. Write biological name and importance of mustard plant.
15. Write affect on speed of enzymes by increasing temperature?
16. Write a note on Rhizopus.
17. Write a note on Mushroom
18. Write a note on Fungi
19. Write a note on Algae3
20. Write a detailed note on electron microscope.
21. Why was the experimental test tube incubated at 37°C?
22. Why the portion inside the Flask could not make starch?
23. Why it is necessary to publish the research work?
24. Why do the welts appear after mosquito bites or leaves the skin?
25. Why do female mosquitoes feed on body of mammals or birds?
26. Who was Rudolf Virchow? What was his idea?
27. Who used the term enzymes for the first time?
28. Who proposed the three Kingdom system of classification?
29. Who gave the concept of metabolism? Also define metabolism?
30. Who discovered the ATP molecule? What is the function in cell?
31. Who discover the lock and key model and define lock and key model?
32. Where is found nervous tissue? ‘What is its role?
33. Where in the chloroplast light reactions of photosynthesis take place?
34. Where are RBCs formed in embryonic life?
35. When scientific name does is abbreviated? Give examples?
36. When does an animal species become extinct?
37. What was the work of Robert Hooke in cell theory?
38. What types of animals are produced in cross bread?
39. What role does the pericardial fluid play?
40. What kind of transport system is in invertebrates?
41. What is the role of magnesium in plants?
42. What is the role of enzymes in metabolism?
43. What is the role of colon bacteria?
44. What is the reason of atherosclerosis?
45. What is the main use of enzymes in food industry?
46. What is the importance of molybdenum for plants?
47. What is the function of root hairs?
48. What is the Function of ribosomes?
49. What is the function of platelets?
50. What is the function of nucleolus in a nucleus?
51. What is the function of muscular tissue?
52. What is the function of fibrinogen and albumin in blood?
53. What is the function of cork cambium?
54. What is the function of colon?
55. What is the difference in blood pressure in pulmonary and systemic circulation?
56. What is the difference between intracellular and extra cellular enzymes?
57. What is the chemical composition of prokaryotic cell wall?
58. What is the affect of temperature on the rate of transpiration?
59. What is taxon?
60. What is species? Write an example.
61. What is role of potassium ions in the opening of stomata?
62. What is Protein energy malnutrition?
63. What is protein and from where we get it?
64. What is process of necrosis?
65. What is phragmoplast?
66. What is photosynthesis? Write its equation.
67. What is peristalsis?
68. What is Paleontology? Give definition of fossil and evolution.
69. What is optimum temperature?
70. What is Molecular biology? What molecules are studied in it?
71. What is meant by turgidity and its relation with stomata?
72. What is meant by resolving power of a microscope?
73. What is meant by pinocytosis?
74. What is meant by optimum temperature?
75. What is meant by hypertonic and hypotonic solutions?
76. What is meant by defection?
77. What is meant by churning?
78. What is meant by “Source” in plants? Explain with an example.
79. What is malnutrition?
80. What is Lock and key model? Who did propose it?
81. What is limiting factor?
82. What is induced fit model? Who did propose it?
83. What is incubation period?
84. What is horticulture?
85. What is homology?
86. What is habituate of marcopoloe sheep?
87. What is go phase?
88. What is glycogen?
89. What is Genetic recombination? What is its significance?
90. What is gastrin?
91. What is gametephyte?
92. What is gall bladder?
93. What is difference between Zoology and Botany?
94. What is difference between xylem are phloem tissues?
95. What is difference between diffusion and osmosis?
96. What is difference between anabolism and catabolism?
97. What is diarrhea?
98. What is dehydration?
99. What is deforestation?
100. What is crossing over?
101. What is chlorophyll?
102. What is cartilage? Give their structure and function.
103. What is cancer? How is it caused?
104. What is biodiversity?
105. What is bio-energetic?
106. What is bio informatics?
107. What is Appendix?
108. What is Angioplasty and Bypass surgery?
109. What is Angina pectoris?
110. What is active transport?
111. What is a nucleoid?
112. What factors affect the rate of enzyme reaction? Write name.
113. What does communal life mean?
114. What do you mean by vascular surgery?
115. What do you mean by transpiration? Explain it?
116. What do you mean by scanning electron microscope?
117. What do you mean by necrosis?
118. What do you mean by mitosis?
119. What do you mean by closed circulatory system? In which animal is it present?
120. What do you mean by catalytic activity of enzymes?
121. What do you mean by biogenesis?
122. What do you mean by balanced diet?
123. What do you know about hibernation?
124. What do you know about electron transport chain?
125. What are variables?
126. What are unicelluar organisms? Give examples.
127. What are the three main stages of aerobic respiration?
128. What are the sources of carbohydrates?
129. What are the health risks if we take non saturated fatty acids in our diet?
130. What are the contributions of Whittaker?
131. What are the benefits of using binomial nomenclature?
132. What are Sieve Tube Cells?
133. What are rough and smooth endoplasmic reticulums?
134. What are role of vitamin D in human body?
135. What are reptiles?
136. What are principles of modern cell theory?
137. What are pericardium and pericardial fluid?
138. What are parasites? Give an example.
139. What are nitrogen fertilizers?
140. What are Minerals and from where we get them?
141. What are microtubules?
142. What are metabolic pathways? What are their functions?
143. What are macronutrients? Give an example.
144. What are lenticels?
145. What are hypotonic solutions?
146. What are Ground Tissues?
147. What are fat soluble vitamins?
148. What are epithelial tissues? Give their functions.
149. What are coral reefs?
150. What are connective tissues? Give their functions.
151. What are conducting tissues in plants for water? Write two kinds of its cell.
152. What are chromoplasts? Write the role of chrornoplasts.
153. What are centrioles? Give their function.
154. What are cardiac muscles?
155. What are capillaries?
156. What are benign tumors?
157. What are bacteriophages?
158. What are arteries?
159. What are amino acids?
160. What are accessory pigments?
161. State the principles of cell theory.
162. Name two major phases of cell cycle and which phase is divided into three. Name these phases.
163. Name two important vitamins which act as co-enzyme.
164. Name three types of plastids.
165. In what ways the respiratory energy is used in the body of organisms?
166. In ecosystem, when a species is called extinct?
167. How temperature effects rate of enzymes reaction?
168. How many species of animals and plants have been discovered?
169. How enzymes are used in biological detergent.
170. How do stomata open by osmosis?
171. How do different factors affect the rate of transpiration?
172. How do aquatic plants obtain carbon dioxide?
173. How are chromosomes formed during prophase?
174. Give two functions of large intestine. .
175. Give two examples of Micro molecule and macromolecules each
176. Give three effects of deforestation.
177. Give the detail of functions of oral cavity.
178. Give the classification of fruit fly.
179. Explain with example that distinction between organic and inorganic fertilizers is not always clear cut.
180. Explain what is the saturation of active sites?
181. Explain two factors which can cause transpiration pull.
182. Explain three main types of organisms in kingdom protista.
183. Explain the steps involved in dark reaction.
184. Explain deductions.
185. Explain any four careers in biology.
186. Discuss two phases of interphone during cell cycle.
187. Differentiate theory and law.
188. Differentiate between somatic and germ line cells.
189. Differentiate between qualitative and quantitative observations.
190. Differentiate between primary and secondary walls?
191. Differentiate Between Plant Mitosis & Animal Mitosis?
192. Differentiate between Physiology and Morphology.
193. Differentiate between paleaontology and parasitology.
194. Differentiate between Inductive reasoning and deductive reasoning.
195. Differentiate between endocytosis and exocytosis.
196. Differentiate between diffusion and facilitated diffusion.
197. Differentiate between bio physics and bio chemistry.
198. Differentiate between bicuspid and tricuspid valve.
199. Differentiate between apoptosis and necrosis.
200. Describe the difference between Hypertonic and Hypotonic solution.
201. Describe metaphase-I?
202. Define transmission electron microscope.
203. Define the term data.
204. Define substrate and product.
205. Define reproduction. When does it occur?
206. Define pulse.
207. Define population. Give examples.
208. Define plasmolysis.
209. Define physiology and embryology.
210. Define Photolysis?
211. Define Paleontology?
212. Define oxidation and reduction.
213. Define osmosis and tonicity.
214. Define nutrition.
215. Define mitosis.
216. Define metastasis?
217. Define meristematic tissue.
218. Define limiting factor.
219. Define life. What diversity is press on the earth?
220. Define inhibitors.
221. Define genetics?
222. Define forestry.
223. Define Entomology and pharmacology.
224. Define deductions.
225. Define cytoplasm. Give its chemical composition.
226. Define crossing Over.
227. Define Cohesion Tension theory.
228. Define closed mitosis.
229. Define chromosomes.
230. Define cell cycle?
231. Define cardiovascular disorders?
232. Define biotechnology.
233. Define antigen.
234. Define anabolism.
235. Define alcoholic fermentation.
236. Defied Prosthetic group
237. Contribution of Jabir Bin Hayan, Abdul Malik Asmai and Bu Ali Sinain biology.
238. A species consists of similar organisms.

Important Long Questions of 9th Class for Biology 2016

1. Write the structure and function of vacuoles.
2. Write the function and structures of the wall.
3. Write the contributions of two Muslims Scientists in biology.
4. Write the composition & function of Red Blood Cells?
5. Write down the summary of light reactions.
6. Write down the steps for conservation of biodiversity.
7. Write down the note on Diarrhoea.
8. Write down the importance of Fertilizers.
9. Write down the function of pharynx?
10. Write down the effects of malnutrition?
11. Write a short note on lysosomes.
12. Write a short note cardiovascular disorder.
13. Write a note on White Blood Cells?
14. Write a note on malnutrition.
15. Write a note on Lipids in Food?
16. Write a note on Light Microscope and Electron Microscope
17. Write a note on carbohydrates.
18. Write a note of Platelets?
19. Write a details note on blood vessels. Write about their types, Structures and functions.
20. Write a detailed note on electron microscope.
21. Write a detail note on ulcer.
22. Write a descriptive note on structure and function of nucleus.
23. Write a comprehensive note on the role of Liver.
24. Write a comprehensive note on limiting factors in photosynthesis.
25. Why small intestine is efficient for the absorption of digested food?
26. Why is the velocity of blood flow the lowest in capillaries?
27. Why are water and dietary fibers considered important in our diets?
28. What other things besides carbon dioxide might pass into or out of the leaf through the stomata?
29. What is the role of large intestine in the process of digestion?
30. What is the role of chlorophyll and light in photosynthesis?
31. What is the relation between the diameters of the red blood cells and the capillaries?
32. What is the function of roots hair?
33. What is the cell cycle and what are it main phases?
34. What is responsible for the increase in the length of potato strip?
35. What is Muscle Tissue? Give its different Types.
36. What is meant by Necrosis? Write its causes. Also describe different events and some distinctive patterns of Necrosis.
37. What is meant by Myocardial Infarction? Describe its causes, symptoms and treatment.
38. What is meant by Heart Beat? Describe the steps of a complete Cardiac Cycle. How the sounds of dubb and dub are produced?
39. What is meant by Deforestation? Write down the causes and effects of Deforestation. Also write down the importance of forests.
40. What is meant by blood transfusion? Discuss Blood transfusions in ABO blood group System.
41. What is meant by Apoptosis? Describe its Events.
42. What is Binomial Nomenclature? Give its major rules with examples and also give its significance
43. What is ATP? Explain ATP as the energy of cells.
44. What four chambers make the human heart and how blood flows through these Chambers?
45. What difficulties can you foresee in using oil test with samples which contain both lipids and water?
46. What characteristic of enzymes makes them specific for substrates?
47. What are the problems faced by animal and plant cells to, maintain their water quantity?
48. What are the functions of roots in plants and how these help in the uptake of water and salts?
49. What are the functions of Blood?
50. What are the different factors that affect the rate of Transpiration?
51. What are goiter and Anemia?
52. What are bile and pancreas give their function.
53. We will not observe the movement of water in the stem, it the leaves of plant are covered with cellophane paper. How is that?
54. Types of permanent tissues?
55. Transpiration is a necessary evil.
56. Most leaves have many more stomata in the lower epidermis than on the upper epidermis. Suggest the reasons.
57. Is “root hair” a cell in plant or not? Describe its structure.
58. In the circulatory system, where the blood pressure is lowest?
59. If all the stomata are closed but the results with cobalt chloride are the same as in your experiment, how would you explain it?
60. How would you relate the internal structure of root with the uptake of water and salts?
61. How would you differentiate between population level and community level of Biological organization?
62. How will you compare respiration photosynthesis?
63. How the soil water content is made available to the upper water columns of plants?
64. How the principle of ratio and proportion are used in biological method?
65. How does pH affect activity?
66. How does digested food move from small intestine to blood?
67. How does blood clot make? What does it do?
68. How do different factors affect the rate of transpiration?
69. How calcium and iron play vital rotes in human body? Describe briefly.
70. How blood disorder Leukemia is different from another disorder thalassaemia?
71. How blood circulates in various chambers of heart?
72. How are vitamins A, C and D important in our diets?
73. Give the Structure of Ribosomes and Golgi apparatus?
74. Explain Water Balance Problems in Animals and in Plants.
75. Explain uses of enzymes in any three industries.
76. Explain two blood disorders in detail.
77. Explain three rules followed when giving scientific names of living organisms.
78. Explain three main types of organisms placed in Kingdom protista.
79. Explain the various events of mitosis
80. Explain the use sources and deficiency symptoms of vitamin C in the body.
81. Explain the steps involved in dark reaction.
82. Explain the significance of Mitosis. Write down the difference between Mitosis and Meiosis.
83. Explain the impact of human being on biodiversity?
84. Explain the changes which take place during prophase of mitosis.
85. Explain the basis of classification.
86. Explain metaphase and anaphase from phases of mitosis.
87. Explain how surface area to volume ratio limits cell size.
88. Explain energy budget of respiration process in detail.
89. Explain any four careers in biology.
90. Draw a simple diagram to explain that Enzyme lower the Activation Energy. By which ways Enzymes lower their Activation Energy.
91. Does the red blood cell appear to be a rigid or a flexible structure?
92. Do your results indicate that a sugar (e.g. sucrose, fructose and maltose) will give the same color glucose did, when tested with Benedict’s solution?
93. Discuss two phases of interphone during cell cycle.
94. Discuss the role of stomach in-the process of digestion.
95. Discuss four phases of inter phase during cell cycle.
96. Differentiate between primary and secondary walls.
97. Differentiate between diffusion and facilitated diffusion.
98. Describe the structure and function of centrioles and vacuoles.
99. Describe the structure and action (function) of the heart of man?
100. Describe the steps involved in solving a problem through biological method.
101. Describe the some errors in meiosis.
102. Describe the role of Nitrogen and Magnesium in plants.
103. Describe the path taken by water through the stem to the leaf as reveled by your experiment.
104. Describe the major animal tissues (epithelial, connective, muscular and nervous) in terms of their cell specificities, locations and functions.
105. Describe the importance of meiosis.
106. Describe the formation and function of lysosomes?
107. Describe the external and internal structure of leaf of Brassica?
108. Describe the Cohesion tension theory to explain transpiration of Water in Plant.
109. Describe swallowing and peristalsis?
110. Describe lock and key model of Enzyme Action.
111. Describe five kingdoms Classification System
112. Describe few methods of food preservation?
113. Describe digestive system of Frog
114. Describe any four types of epithelial tissues in detail.
115. Define the term of classification. What are its aims basis and principles?
116. Define the process of digestion. Describe its different types.
117. Define the phases that occur during nutrition.
118. Define systole and diastole.
119. Define meiosis. Describe the events that occur during the phases of meiosis.
120. Define community and explain it with an example.
121. Define biology. Describe the major divisions and branches of biology.
122. Define balanced diet. How would you relate it with age, sex and activity?
123. Briefly describe the factors that affect the activity of enzymes?
124. Apply Vaseline on the lower surface of the leaf, set up the same apparatus as control, and note the observation Soil, or leaves or outside where could the liquid have come from?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Chemistry Long Important Questions Guess Paper 10th Class 2016

1.     Write the uses of Bases.

2.     Write note on the treatment of sewage water.

3.     Write note on fractional distillation of petroleum.

4.     Write down the significame of atmospheric gasses.

5.     Write detailed not on Ammonia Solvay Process.

6.     Write a short note on the layers of atmosphere.

7.     Write a note on methods of removing water hardness.

8.     Write a note on general characteristics of organic compounds:

9.     Write a detailed note on function a group of alkenes and alkyne.

10.  Write a detailed not on classification of organic compounds.

11.  Write a detailed account of nucleic acids.

12.  Write a detail note on hydrocarbons as feed stock in industry,

13.  Write a detail account on Solvay’s process.

14.  Write a .note on the uses of organic compounds?

15.  Why water is universal solvent explain.

16.  White levies concept of acid and bases.

17.  What is water pollution explain.

18.  What is importance of equilibrium content?

19.  What is destructive distillation of Coal?

20.  What is auto-ionization of water? How is it used to establish PH of water?

21.  What are vitamins? Describe the types of vitamins mentioning sources, uses and diseases of each type,

22.  What are polysaccharides explain.

23.  What are monosaccharides? Give their characteristics.

24.  What are mines? Explain the different types of amines giving examples.

25.  What are lipids? Write a detailed account of lipids? Describe the sources and uses of lipids

26.  What are homologous series? Write down the characteristic of homologous series.

27.  What are general properties of Coal?

28.  What are Carbohydrates? How monosaccharide’s prepared.

29.  What are amino acids? Explain that amino acids are building blocks of proteins.

30.  State the preparation of alkanes and alkyanes.

31.  State the law of Mass-Action and derive the expression for equilibrium constant for a general reaction.

32.  State reversible reaction and dynamic equilibrium

33.  Standardize the given NaOH solution volumetrically.

34.  Identify sodium. Calcium, Strontium, barium, copper and potassium ions by flam test.

35.  Identify saturated and unsaturated organic compound by KM„04 test.

36.  Identify Carboxylic acids using sodium carbonate test.

37.  How urea is formed on commercial sale? Explain with help of flow sheet diagram.

38.  How the crude oil cans is refined? Or write a note on the Fractional Distillation of Petroleum.

39.  How soluble salts are prepared?

40.  How polarity of water molecules plays its role to dissolve the substances.

41.  Give the physical properties of Acids and Bases.

42.  Give the methods for preparation of alkenes.

43.  Give the importance of vitamins.

44.  Give the characteristics of troposphere.

45.  Give the characteristics of an acidic salts and Basic Salts.

46.  Give some used of organic Compounds in our daily life.

47.  Give methods of preparation of alkynes.

48.  Give Four Uses of Calcium oxide.

49.  Give Disadvantages of hard water.

50.  Give different chemical reactions of alkanes?

51.  Give concept of Arrhenius about acid and base.

52.  Give chemical reactions of alkenes

53.  Explain with example how soluble Salts are prepared.

54.  Explain water pollution by industries.

55.  Explain the sources and uses of proteins.

56.  Explain the oxidation of acetylenes.

57.  Explain the Lewis Concept of acids and Base.

58.  Explain that amines acids are building blokes of proteins.

59.  Explain roasting with reference to Copper Experiments.

60.  Explain oligo saccharides.

61.  Explain chemical properties of Acids?

62.  Determine the exact molarity of the NaCO3 solution volumetrically.

63.  Describe the occurrence of water? Also describe the structure of water and is properties.

64.  Describe the functional group of an Alcohol. How alcoholic group identified.

65.  Describe indicators and explain.

66.  Describe a reversible reaction with the help of an example and graph.

67.  Derive the equilibrium constant. Expression for general reaction

68.  Demonstrate the softening of water by removal of calcium and magnesium ions from hard water.

69.  Demonstrate that sugar decomposes into elements and other compounds.

70.  Define petroleum and what is the origin of petroleum?

71.  Define and explain the law of mass action and derive the expression for the equilibrium constant (Kc).

72.  Define a Salt and give the characteristic properties of Salts.

73.  Classify substances as acidic, basic or neutral.