Physics - Heat & Thermo Question with Solution | TestHub

$T=\frac{PV}{nR}:P$ rising and $V$ falling can keep $PV$ constant, so the process may be isothermal (A true). Adiabatic compression also raises $P$ while $V$ falls (C true). Volume decreases, so work done by the gas is negative (B false); $\Delta U=-W$ holds only in adiabatic processes (D false).