Consider the following two statements.
(A) If heat is added to a system, its temperature must increase.
(B) If positive work is done by a system in a thermodynamic process, its volume must increase.

Options

A. Both A and B are correct
B. A is correct but B is wrong
C. B is correct but A is wrong
D. Both A and B are wrong

Answer

C

Explanation

`DeltaQ=DeltaU=DeltaW`
It may be that `DeltaQ` is utilized in doing work as in isothermal process, (l) is wrong. If `DeltaW=+ve`. Volume must increase