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General Science - Questions and Answers

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591. Which of the following gases is obtained by the reaction of water with calcium carbide ?
A. Acetylene
B. Ethylene
C. Methane
D. Water gas
Explanation:
592. Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Temperature decteases with increasing height above sea level.Reason (R) : Atmosphere is mainly heated by conduction from the earth.
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.
Explanation:
593. Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Copper rods are preferred to iron rods for making lightning conductors.Reason (R) : Copper is a better conductor of electricity.
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.
Explanation:
594. Which of the following countries has the largest area in the world ?
A. Canada
B. U.S.A.
C. U.S.S.R
D. China
Explanation:
595. Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : A tennis ball will bounce higher in Calcutta than it would in Shimla. 2. Reason (R) : The downward pull due to gravity is less and air is more rarified in Shimla than in Calcutta.
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 true but R is false.
Explanation:
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