JEE PYQ: Thermodynamics Question 22
Question 22 - 2019 (09 Apr Shift 1)
Among the following, the set of parameters that represents path functions, is:
(1) $q + w$
(2) $q$
(3) $w$
(4) $H - TS$
(1) (B) and (C)
(2) (B), (C) and (D)
(3) (A) and (D)
(4) (A), (B) and (C)
Show Answer
Answer: (1)
Solution
We know that heat and work are not state functions but $q + w = \Delta U$ is a state function. $H - TS$ (i.e. $G$) is also a state function. So $q$ and $w$ are path functions.