16.In the following question, there are two statements labelled as Assertion (A) and Reason (R). Assertion (A) : An iron ball floats on mercury but gets immersed in water. Reason (R) : The specific gravity of iron is more than that of mercury. A) if both A and R are true and R is the correct explanation of A B) if both A and R are true but R is not the correct explanation of A C) if A is true but R is false; D) if A is false but R is true E) If both A and R are false View Answer Report DiscussAnswer: Option CExplanation:Iron with specific gravity less than that of mercury but more than that of water, floats in the former but gets immersed in the second' Thus, A is true but R is false. Hence the answer is (c).
17.In the following question, there are two statements labelled as Assertion (A) and Reason (R). Assertion (A) : Most of the Himalayan rivers are perennial. Reason (R) : They are fed by melting snow A) if both A and R are true and R is the correct explanation of A B) if both A and R are true but R is not the correct explanation of A C) if A is true but R is false; D) if A is false but R is true E) If both A and R are false View Answer Report DiscussAnswer: Option AExplanation:Most Himalayan rivers are perennial because they are fed by the melting snow throughout the Year. Thus, R correctly explains A. Hence the answer is (a).
