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396. 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 ?Assertion (A) : Leakages in household gas cylinders can be detected.Reason ® : LPG contains ethyl merceptan which is a smelling agent.
A. Both A and R are true but 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:
397. Of the following, which one is the best insulator ?
A. Wood
B. Cloth
C. Glass
D. Paper
Explanation:
398. 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) : All flying animals belong to the clas of Aves.Reason (R) : All flying animals have wings.
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:
399. 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 ?Assertion (A) : Radio carbon dating is a precise method of determining the age of ancient objects.Both A and R are true but R is the correct explanation of A.Reason (R) : Once an object dies, teh amount of radioactive carbon present in it decreases with time following a definite law.
A. Both A and R are true but 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:
400. 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) : Soft iron is used in electromagnets. 2. Reason (R) : Soft iron does not retain magnetism permanently.
A. Both A and R are true but 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:
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