Question

Which of the following are not state functions?
(I) $q+w$

(II) $q$
(III) $w$

(IV) $H-TS$

• A. $\left(I\right),\left(II\right)$ and $\left(III\right)$
• B. $\left(II\right)$ and $\left(III\right)$
• C. $\left(I\right)$ and $\left(IV\right)$
• D. $\left(II\right),\left(III\right)$ and $\left(IV\right)$

Answer 1

Answer: (B)

$\left(II\right)$ and $\left(III\right)$

State functions or state variables depend only on the state of the system.
Here '$w$' represents work done and '$q$' represents the amount of heat so both of these are not state functions.