Question

Heat given to process is positive, match the following option
of column I with the corresponding option of column II

Answer 1

In process $J\to K:V$ is constant whereas $p$ is decreasing.
Therefore, $T$ should also decrease.
$W=0,△U=negative$ and $Q<0$
In process $K\to L:p$ is constant while $V$ is increasing.
Therefore, temperature should also increase.
$W>0,△U>0$ and $Q>0$
In process $L\to M$: This is inverse of process $J\to K$.
$W=0,△U>0$ and $Q>0$
In process $M\to J:V$ is decreasing.
Therefore, $W<0$.
$(pV{)}_J<(pV{)}_M$
$T_J<T_M$
$△U<0$
Therefore, $Q<0$.