Q 11-11-019NEETJEE MainEasy
In which process is all the heat supplied to an ideal gas used to increase its internal energy?
Answer: (B) isochoric
Concept. $Q = \Delta U + W$: all heat goes to $\Delta U$ only if $W = 0$.
Step 1. Process. Constant volume. (Isothermal $\Delta U = 0$; adiabatic $Q = 0$; isobaric part goes into work.)
Answer. Isochoric (Option B).
Solution by Sreeraj P, M.Sc Physics