CDS Exam (I)- 2022 - General Knowledge Defence Question Paper

CDS Previous Year Question Papers Question Papers
CDS Exam (I)- 2022 - General Knowledge

CDS Exam (I)- 2022 - General Knowledge Defence Questions

21.
An object weighs 9 N on the surface of the Earth. What would be its weight, when measured on the surface of a planet where the acceleration due to gravity is 9 times that on the surface of the Earth?
A.
The weight would remain the same
B.
The weight would be equal to 1 N
C.
The weight would become 9 times
D.
The weight will be reduced to \( \frac{1}{9} \) N
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ANSWER :
C. The weight would become 9 times
22.
The twinkling of a star is due to:
A.
atmospheric reflection of starlight.
B.
atmospheric refraction of starlight.
C.
continuous change in the position of the star.
D.
oscillation of starlight.
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ANSWER :
B. atmospheric refraction of starlight.
23.
A convex lens has a focal length of 15 cm. At what distance should an object be placed in front of the lens to get a real image of the same size of the object?
A.
15 cm
B.
10 cm
C.
30 cm
D.
40 cm
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ANSWER :
C. 30 cm
24.
Which one of the following statements about biogas is not correct?
A.
It is mainly composed of methane gas.
B.
It is a non-renewable source of energy.
C.
It is formed by the decomposition of cow dung in the absence of oxygen.
D.
It burns without smoke and leaves no residue.
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ANSWER :
B. It is a non-renewable source of energy.
25.
Which of the following mineral acids is found in human stomach?
A.
Hydrochloric acid
B.
Lactic acid
C.
Uric acid
D.
Methanoic acid
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ANSWER :
A. Hydrochloric acid
26.
Which one of the following living organisms gives litmus?
A.
Protozoa
B.
Virus
C.
Lichen
D.
Saccharomyces
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ANSWER :
C. Lichen
27.
Which one of the following is the main reason of acid rains?
A.
Dissolution of sulphur and nitrogen oxides in rain
B.
Dissolution of minerals in rain
C.
Dissolution of dust particles in rain
D.
Dissolution of soil solution in rain
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ANSWER :
A. Dissolution of sulphur and nitrogen oxides in rain
28.
Mutation in a virus is caused due to a change in its:
A.
cell size.
B.
genetic material.
C.
shape.
D.
colour.
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ANSWER :
B. genetic material.
29.
Yeast, which is used to make bread, belongs to the group:
A.
Protista
B.
Fungi
C.
Monera
D.
Protozoa
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ANSWER :
B. Fungi
30.
Hyphae are:
A.
produced by yeast.
B.
thin threads formed by many fungi.
C.
reproductive cells.
D.
responsible for preventing the cell from losing water in wet conditions.
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ANSWER :
B. thin threads formed by many fungi.
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