Final Exam Class 9 Science Set 2

 Page 1


Time Allowed: 3 hours Maximum Marks: 80 
General Instructions:
1. This question paper consists of 39 questions in 3 sections. Section A is Biology, Section B is Chemistry and
Section C is Physics.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
Section A
a) Waste assimilation b) Irrigation
c) Organic farming d) Composting
1. Which of the following process is shown in the given image? [1]
a) nuclear membrane b) cell wall
c) both cell membrane and nuclear membrane d) cell membrane
2. A prokaryotic cell does not possess: [1]
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. Match the following with the correct response
(a) Aerenchyma (i) Permanent tissue
(b) Parenchyma (ii) Thin-walled packing cells
(c) Chlorenchyma (iii) Buoyancy
(d) Cork (iv) Photosynthesis
[1]
4. Identify the correct statement:
A. The double membrane is present in the nucleus.
B. A liver cell carries about 500-1000 mitochondria.
C. Wood contains the largest amount of cellulose.
D. All the statements are correct.
[1]
Page 1 of 14
Page 2


Time Allowed: 3 hours Maximum Marks: 80 
General Instructions:
1. This question paper consists of 39 questions in 3 sections. Section A is Biology, Section B is Chemistry and
Section C is Physics.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
Section A
a) Waste assimilation b) Irrigation
c) Organic farming d) Composting
1. Which of the following process is shown in the given image? [1]
a) nuclear membrane b) cell wall
c) both cell membrane and nuclear membrane d) cell membrane
2. A prokaryotic cell does not possess: [1]
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. Match the following with the correct response
(a) Aerenchyma (i) Permanent tissue
(b) Parenchyma (ii) Thin-walled packing cells
(c) Chlorenchyma (iii) Buoyancy
(d) Cork (iv) Photosynthesis
[1]
4. Identify the correct statement:
A. The double membrane is present in the nucleus.
B. A liver cell carries about 500-1000 mitochondria.
C. Wood contains the largest amount of cellulose.
D. All the statements are correct.
[1]
Page 1 of 14
a) (A) b) (B)
c) (D) d) (C)
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
5. Assertion (A): Proper cleaning for cows and buffaloes is required. 
Reason (R): Proper cleaning maintains the health of animals and also helps in clean milk production. 
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
6. Assertion (A): The inner lining of the intestine has tall epithelial cells. 
Reason (R): Columnar epithelium facilitates absorption and secretion.
[1]
a) A.V . Leeuwenhoek b) Robert Hooke
c) Robert Brown d) R. Virchow
7. Living cells were discovered by [1]
a) (i) and (iv) b) (i) and (ii)
c) (ii) and (iii) d) (iii) and (iv)
8. Which muscles act involuntarily?
i. Striated muscles
ii. Smooth muscles
iii. Cardiac muscles
iv. Skeletal muslces
[1]
a) Increased production and storage of food
grains
b) People should have money to purchase the
grains
c) Easy access of people to the food grain d) All of these
9. To solve the food problem of the country, which among the following is necessary? [1]
10. Discuss various methods for weed control. [2]
11. What is ATP? Write its full form. [2]
OR
What is the importance of nucleus?
12. i. How is the epidermis of the plants living in very dry habitats adapted?
ii. Write functions of guard cells of stomata in the leaf.
iii. Epidermal cells help in the absorption of water and nutrients from soil. How?
[2]
13. Observe the given below image of the tissue and answer the following questions: 
[3]
Page 2 of 14
Page 3


Time Allowed: 3 hours Maximum Marks: 80 
General Instructions:
1. This question paper consists of 39 questions in 3 sections. Section A is Biology, Section B is Chemistry and
Section C is Physics.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
Section A
a) Waste assimilation b) Irrigation
c) Organic farming d) Composting
1. Which of the following process is shown in the given image? [1]
a) nuclear membrane b) cell wall
c) both cell membrane and nuclear membrane d) cell membrane
2. A prokaryotic cell does not possess: [1]
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. Match the following with the correct response
(a) Aerenchyma (i) Permanent tissue
(b) Parenchyma (ii) Thin-walled packing cells
(c) Chlorenchyma (iii) Buoyancy
(d) Cork (iv) Photosynthesis
[1]
4. Identify the correct statement:
A. The double membrane is present in the nucleus.
B. A liver cell carries about 500-1000 mitochondria.
C. Wood contains the largest amount of cellulose.
D. All the statements are correct.
[1]
Page 1 of 14
a) (A) b) (B)
c) (D) d) (C)
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
5. Assertion (A): Proper cleaning for cows and buffaloes is required. 
Reason (R): Proper cleaning maintains the health of animals and also helps in clean milk production. 
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
6. Assertion (A): The inner lining of the intestine has tall epithelial cells. 
Reason (R): Columnar epithelium facilitates absorption and secretion.
[1]
a) A.V . Leeuwenhoek b) Robert Hooke
c) Robert Brown d) R. Virchow
7. Living cells were discovered by [1]
a) (i) and (iv) b) (i) and (ii)
c) (ii) and (iii) d) (iii) and (iv)
8. Which muscles act involuntarily?
i. Striated muscles
ii. Smooth muscles
iii. Cardiac muscles
iv. Skeletal muslces
[1]
a) Increased production and storage of food
grains
b) People should have money to purchase the
grains
c) Easy access of people to the food grain d) All of these
9. To solve the food problem of the country, which among the following is necessary? [1]
10. Discuss various methods for weed control. [2]
11. What is ATP? Write its full form. [2]
OR
What is the importance of nucleus?
12. i. How is the epidermis of the plants living in very dry habitats adapted?
ii. Write functions of guard cells of stomata in the leaf.
iii. Epidermal cells help in the absorption of water and nutrients from soil. How?
[2]
13. Observe the given below image of the tissue and answer the following questions: 
[3]
Page 2 of 14
Section B
i. Identify the type of tissue shown in the given image.
ii. Where is it found?
iii. Why this tissue acts as an insulator?
14. 
a. Label X and Y
b. What is the function of X?
c. What is the composition of Y?
d. Identify the above diagram and what is its common name?
[3]
15. Read the following text carefully and answer the questions that follow: 
Poultry is the rearing of domesticated fowl (chicken), ducks, geese, turkey and some varieties of pigeon for their
meat and eggs. Poultry birds are of two types that is broilers and layers. One is specialized meat-producing
poultry birds while other is egg-laying poultry birds. The tremendous rise in the availability of poultry products
is called Silver Revolution. 
i. What is the meaning of layers regarding poultry? (1)
ii. There are different breeds of hens, so give some information about broiler. (1)
iii. We know that different types of revolution regarding animal husbandry. So, what is the silver revolution
explain? (2) 
OR
There are different breeds of poultry birds, mention two examples of indigenous and exotic breeds of poultry
birds. (2)
[4]
16. Why are mitochondria called powerhouse of the cell? Give three similarities and one difference between
mitochondria and plastid.
[5]
OR
Briefly describe striated and smooth muscles with their functions.
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
17. Assertion (A): Liquids diffuse easily as compared to gases. 
Reason (R): Intermolecular forces are lesser in gas.
[1]
a) Monoatomic and diatomic respectively b) Diatomic and monoatomic respectively.
18. Atomicity of Chlorine and Argon is: [1]
Page 3 of 14
Page 4


Time Allowed: 3 hours Maximum Marks: 80 
General Instructions:
1. This question paper consists of 39 questions in 3 sections. Section A is Biology, Section B is Chemistry and
Section C is Physics.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
Section A
a) Waste assimilation b) Irrigation
c) Organic farming d) Composting
1. Which of the following process is shown in the given image? [1]
a) nuclear membrane b) cell wall
c) both cell membrane and nuclear membrane d) cell membrane
2. A prokaryotic cell does not possess: [1]
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. Match the following with the correct response
(a) Aerenchyma (i) Permanent tissue
(b) Parenchyma (ii) Thin-walled packing cells
(c) Chlorenchyma (iii) Buoyancy
(d) Cork (iv) Photosynthesis
[1]
4. Identify the correct statement:
A. The double membrane is present in the nucleus.
B. A liver cell carries about 500-1000 mitochondria.
C. Wood contains the largest amount of cellulose.
D. All the statements are correct.
[1]
Page 1 of 14
a) (A) b) (B)
c) (D) d) (C)
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
5. Assertion (A): Proper cleaning for cows and buffaloes is required. 
Reason (R): Proper cleaning maintains the health of animals and also helps in clean milk production. 
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
6. Assertion (A): The inner lining of the intestine has tall epithelial cells. 
Reason (R): Columnar epithelium facilitates absorption and secretion.
[1]
a) A.V . Leeuwenhoek b) Robert Hooke
c) Robert Brown d) R. Virchow
7. Living cells were discovered by [1]
a) (i) and (iv) b) (i) and (ii)
c) (ii) and (iii) d) (iii) and (iv)
8. Which muscles act involuntarily?
i. Striated muscles
ii. Smooth muscles
iii. Cardiac muscles
iv. Skeletal muslces
[1]
a) Increased production and storage of food
grains
b) People should have money to purchase the
grains
c) Easy access of people to the food grain d) All of these
9. To solve the food problem of the country, which among the following is necessary? [1]
10. Discuss various methods for weed control. [2]
11. What is ATP? Write its full form. [2]
OR
What is the importance of nucleus?
12. i. How is the epidermis of the plants living in very dry habitats adapted?
ii. Write functions of guard cells of stomata in the leaf.
iii. Epidermal cells help in the absorption of water and nutrients from soil. How?
[2]
13. Observe the given below image of the tissue and answer the following questions: 
[3]
Page 2 of 14
Section B
i. Identify the type of tissue shown in the given image.
ii. Where is it found?
iii. Why this tissue acts as an insulator?
14. 
a. Label X and Y
b. What is the function of X?
c. What is the composition of Y?
d. Identify the above diagram and what is its common name?
[3]
15. Read the following text carefully and answer the questions that follow: 
Poultry is the rearing of domesticated fowl (chicken), ducks, geese, turkey and some varieties of pigeon for their
meat and eggs. Poultry birds are of two types that is broilers and layers. One is specialized meat-producing
poultry birds while other is egg-laying poultry birds. The tremendous rise in the availability of poultry products
is called Silver Revolution. 
i. What is the meaning of layers regarding poultry? (1)
ii. There are different breeds of hens, so give some information about broiler. (1)
iii. We know that different types of revolution regarding animal husbandry. So, what is the silver revolution
explain? (2) 
OR
There are different breeds of poultry birds, mention two examples of indigenous and exotic breeds of poultry
birds. (2)
[4]
16. Why are mitochondria called powerhouse of the cell? Give three similarities and one difference between
mitochondria and plastid.
[5]
OR
Briefly describe striated and smooth muscles with their functions.
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
17. Assertion (A): Liquids diffuse easily as compared to gases. 
Reason (R): Intermolecular forces are lesser in gas.
[1]
a) Monoatomic and diatomic respectively b) Diatomic and monoatomic respectively.
18. Atomicity of Chlorine and Argon is: [1]
Page 3 of 14
c) Monoatomic and monoatomic respectively. d) Diatomic and diatomic respectively.
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
19. Match the following with the correct response.
(a) Colloidal solution (i) The maximum amount of solute in a given solvent
(b) Suspension (ii) Particle size between 1nm-100mn
(c) Saturated solution (iii) Particle size is less than 1nm
(d) Solution (iv) Particles of one substance dispersed not dissolved
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
20. Assertion (A): For noble gases, valency is zero. 
Reason (R): Noble gases have 8 valence electrons.
[1]
a) (C) b) (B)
c) (D) d) (A)
21. Which of the following elements are present in Quick lime?
A. Calcium, Oxygen
B. Sodium, Hydrogen, Oxygen
C. Calcium, Bromine
D. Calcium chloride
[1]
a) NH
3
 and N
2
b) NH
3
 and H
2
c) CO and N
2
d) CO and SO
2
22. The given apparatus is used to study the diffusion of a number of gases at the same temperature and pressure. 
Which of the following pairs of gases would diffuse into the vacuum at the same speed? 
[Given : Atomic mass of H = 1 u, C = 12 u, N = 14 u, S = 32 u, O = 16 u]
[1]
a) a change of colour to blue-black in test tube
'B' but not in test tube 'A'
b) a change of colour to blue-black in both
tubes 'A' and 'B'
c) no change of colour in any test tube d) a change of colour to blue-black in test tube
'A' but not in test tube 'B'
23. A student added only two drops of iodine to a rice extract in test tube 'A'. Another student added a little rice
extract to iodine solution in test tube 'B'. They would then observe:
[1]
24. 
The bond displace in this figure is ________.
[1]
Page 4 of 14
Page 5


Time Allowed: 3 hours Maximum Marks: 80 
General Instructions:
1. This question paper consists of 39 questions in 3 sections. Section A is Biology, Section B is Chemistry and
Section C is Physics.
2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to
attempt only one of these questions.
Section A
a) Waste assimilation b) Irrigation
c) Organic farming d) Composting
1. Which of the following process is shown in the given image? [1]
a) nuclear membrane b) cell wall
c) both cell membrane and nuclear membrane d) cell membrane
2. A prokaryotic cell does not possess: [1]
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
3. Match the following with the correct response
(a) Aerenchyma (i) Permanent tissue
(b) Parenchyma (ii) Thin-walled packing cells
(c) Chlorenchyma (iii) Buoyancy
(d) Cork (iv) Photosynthesis
[1]
4. Identify the correct statement:
A. The double membrane is present in the nucleus.
B. A liver cell carries about 500-1000 mitochondria.
C. Wood contains the largest amount of cellulose.
D. All the statements are correct.
[1]
Page 1 of 14
a) (A) b) (B)
c) (D) d) (C)
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
5. Assertion (A): Proper cleaning for cows and buffaloes is required. 
Reason (R): Proper cleaning maintains the health of animals and also helps in clean milk production. 
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
6. Assertion (A): The inner lining of the intestine has tall epithelial cells. 
Reason (R): Columnar epithelium facilitates absorption and secretion.
[1]
a) A.V . Leeuwenhoek b) Robert Hooke
c) Robert Brown d) R. Virchow
7. Living cells were discovered by [1]
a) (i) and (iv) b) (i) and (ii)
c) (ii) and (iii) d) (iii) and (iv)
8. Which muscles act involuntarily?
i. Striated muscles
ii. Smooth muscles
iii. Cardiac muscles
iv. Skeletal muslces
[1]
a) Increased production and storage of food
grains
b) People should have money to purchase the
grains
c) Easy access of people to the food grain d) All of these
9. To solve the food problem of the country, which among the following is necessary? [1]
10. Discuss various methods for weed control. [2]
11. What is ATP? Write its full form. [2]
OR
What is the importance of nucleus?
12. i. How is the epidermis of the plants living in very dry habitats adapted?
ii. Write functions of guard cells of stomata in the leaf.
iii. Epidermal cells help in the absorption of water and nutrients from soil. How?
[2]
13. Observe the given below image of the tissue and answer the following questions: 
[3]
Page 2 of 14
Section B
i. Identify the type of tissue shown in the given image.
ii. Where is it found?
iii. Why this tissue acts as an insulator?
14. 
a. Label X and Y
b. What is the function of X?
c. What is the composition of Y?
d. Identify the above diagram and what is its common name?
[3]
15. Read the following text carefully and answer the questions that follow: 
Poultry is the rearing of domesticated fowl (chicken), ducks, geese, turkey and some varieties of pigeon for their
meat and eggs. Poultry birds are of two types that is broilers and layers. One is specialized meat-producing
poultry birds while other is egg-laying poultry birds. The tremendous rise in the availability of poultry products
is called Silver Revolution. 
i. What is the meaning of layers regarding poultry? (1)
ii. There are different breeds of hens, so give some information about broiler. (1)
iii. We know that different types of revolution regarding animal husbandry. So, what is the silver revolution
explain? (2) 
OR
There are different breeds of poultry birds, mention two examples of indigenous and exotic breeds of poultry
birds. (2)
[4]
16. Why are mitochondria called powerhouse of the cell? Give three similarities and one difference between
mitochondria and plastid.
[5]
OR
Briefly describe striated and smooth muscles with their functions.
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
17. Assertion (A): Liquids diffuse easily as compared to gases. 
Reason (R): Intermolecular forces are lesser in gas.
[1]
a) Monoatomic and diatomic respectively b) Diatomic and monoatomic respectively.
18. Atomicity of Chlorine and Argon is: [1]
Page 3 of 14
c) Monoatomic and monoatomic respectively. d) Diatomic and diatomic respectively.
a) (a) - (i), (b) - (iii), (c) - (ii), (d) - (iv) b) (a) - (ii), (b) - (iv), (c) - (i), (d) - (iii)
c) (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i) d) (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
19. Match the following with the correct response.
(a) Colloidal solution (i) The maximum amount of solute in a given solvent
(b) Suspension (ii) Particle size between 1nm-100mn
(c) Saturated solution (iii) Particle size is less than 1nm
(d) Solution (iv) Particles of one substance dispersed not dissolved
[1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
20. Assertion (A): For noble gases, valency is zero. 
Reason (R): Noble gases have 8 valence electrons.
[1]
a) (C) b) (B)
c) (D) d) (A)
21. Which of the following elements are present in Quick lime?
A. Calcium, Oxygen
B. Sodium, Hydrogen, Oxygen
C. Calcium, Bromine
D. Calcium chloride
[1]
a) NH
3
 and N
2
b) NH
3
 and H
2
c) CO and N
2
d) CO and SO
2
22. The given apparatus is used to study the diffusion of a number of gases at the same temperature and pressure. 
Which of the following pairs of gases would diffuse into the vacuum at the same speed? 
[Given : Atomic mass of H = 1 u, C = 12 u, N = 14 u, S = 32 u, O = 16 u]
[1]
a) a change of colour to blue-black in test tube
'B' but not in test tube 'A'
b) a change of colour to blue-black in both
tubes 'A' and 'B'
c) no change of colour in any test tube d) a change of colour to blue-black in test tube
'A' but not in test tube 'B'
23. A student added only two drops of iodine to a rice extract in test tube 'A'. Another student added a little rice
extract to iodine solution in test tube 'B'. They would then observe:
[1]
24. 
The bond displace in this figure is ________.
[1]
Page 4 of 14
Section C
a) polar covalent bonds b) covalent bond
c) hydrogen bond d) ionic bond
25. What is a colloid? What are the various properties of colloids? [2]
26. Carbon dioxide produced by action of dilute hydrochloric acid on potassium hydrogen carbonate is moist
whereas that produced by heating potassium hydrogen carbonate is dry. What would be the difference in the
composition of carbon dioxide in the two cases? State the associated law.
[3]
OR
Dalton's atomic theory is contradicted by the formula of sucrose C
12
H
22
O
11
. Justify the statement.
27. Distinguish between : Evaporation and boiling [3]
28. Read the following text carefully and answer the questions that follow: 
In nature, a number of atoms of some elements have been identified, which have the same atomic number but
different mass numbers. Many elements consist of a mixture of isotopes. Each isotope of an element is a pure
substance. Chlorine occurs in nature in two isotopic forms. While hydrogen occurs in three isotopic forms.
Isotopic have various applications such as an isotope of uranium is used as a fuel in nuclear reactors. The mass
of an atom of any natural element is taken as the average mass of all the naturally occurring atoms of that
element. Atoms of different elements with different atomic numbers, which have the same mass number, are
known as isobars.
i. What is the isotope of cobalt that is used for treatment of cancer? (1)
ii. The isotope deuterium of hydrogen has (1)
iii. Why chemical properties of all the isotopes of an element identical? (2) 
OR
Hydrogen exists in three isotopic forms, 
1
H
1
, 
1
H
2
, 
1
H
3
 known as protium, deuterium and tritium. Why are all
the isotopes neutral in nature? (2)
[4]
29. i. What factors affect the solubility of solvent and solute?
ii. State the differences between compounds and mixtures
[5]
OR
Iron filings and sulphur were mixed together and divided into two parts, A and B. Part A was heated strongly while
part B was not heated. Dilute hydrochloric acid was added to both the parts and evolution of gas was seen in both the
cases. How will you identify the gases evolved?
a) child b) ball
c) All have equal inertia d) plate
30. A plate, a ball and child all have the same mass. The one having more inertia is the [1]
a) Both A and R are true and R is the correct
explanation of A.
b) Both A and R are true but R is not the
correct explanation of A.
c) A is true but R is false. d) A is false but R is true.
31. Assertion (A): A crane P lifts a car upto a certain height in 1 min. Another crane Q lifts the same car upto the
same height in 2 min. Then crane P consumes two times more fuel than crane Q. 
Reason (R): Crane P supplies two times more power than crane Q.
[1]
32. The pitch of the two signals A and B shown below are P
A
 and P
B
 respectively. Then [1]
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