Choose the correct alternative from the following : - Assertion (A) : River Narmada flows westward.
Reason (R) : Narmada falls into the Bay of Bengal.

C. A IS TRUE BUT R IS FALSE.

Choose the correct alternative from the following : - Assertion (A) : Gandhiji withdrew the non-cooperation movement.
Reason (R) : There was violence at the Chauri Chaura outrage.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : Uranium undergoes nuclear fusion reaction.
Reason (R) : It has a big, unstable nucleus.

D. A IS FALSE BUT R IS TRUE.

Choose the correct alternative from the following : - Assertion (A) : The freezing of sea water during winter does not kill the fishes.
Reason (R) : Only surface water is frozen.

A. BOTH A AND R ARE TRUE AND R IS THE CORRECT EXPLANATION OF A.

Choose the correct alternative from the following : - Assertion (A) : Vaccines prevent diseases.
Reason (R) : Vaccines must be given to children.

B. BOTH A AND R ARE TRUE BUT R IS NOT THE CORRECT EXPLANATION OF A.