Question

Which of the following is a state function ?

• A. $q\times w$
• B. $q+w$
• C. $\frac{q^2}{w^2}$
• D. $\sqrt{qw}$

Answer 1

The correct option is B $q+w$

Solution:- (B) $q+w$

From first law of thermodynamics,

$\Delta U=q+w$

As we know that $\Delta U$ is a state function, thus we can say that $q+w$ is a state function.