Assertion : During an adiabatic process, heat energy is not exchanged between system and its surroundings.
Reason : The temperature of a gas increases when it undergoes an adiabatic expansion.

Options

A. A and (R) are correct and (R) is the correct explanation of(A).
B. If both (A) and (R) are correct, but (R) is not the correct explanation of(A).
C. (A) is correct, but (R) is incorrect.
D. both (A) and (R) are incorrect.

Answer

C

Explanation

The temperature of a gas decreases when it undergoes adiabatic expansion.