KEAM 2018 Physics and Chemistry Paper

According first law of thermodynamics,
Q=∆V+W
or ‌‌∆V=Q−W
According given conditions
I. Q>0 and W=0
or ‌‌∆V=Q
Here Q>0, therefore ∆V will be increase.
II. Q<0 and W=0
or ‌‌∆V=Q
Here, Q>0, therefore ∆V will be decrease.
III. W>0 and Q=0
Or ∆V=−W
Here, W>0 therefore ∆V will be decrease.
IV. W<0 and Q=0
or ∆V=−W
Here, W<0, therefore ∆V will be increase.
Hence, condition I and IV will lead to an increase in the internal energy of the system.
Therefore, option (c) is correct.