1.

Incorrect relation is

Answer»

for isothermal reversible change `W=-P_(EXT)(V_f-V_i)`
for isothermal reversible change `Q=2.303nRtlogV_f/V_i`
for isothermal reversible change `W=-2.303nRTlogP_f/P_i`
for ADIABATIC change `DeltaU=W`

ANSWER :C


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