For isothermal process: $T_{2}=T_{o}$

For adibatic process: $T_{o}\left(V_{o}\right)^{\gamma-1}=T(V)^{\gamma-1}$

As $V>V_{o} \Longrightarrow T

Thus final temp. is greater for isothermal process.

For isothermal process: $P_{o} V_{o}=P_{i} V \quad \Longrightarrow P_{i}=P_{o} \frac{V_{o}}{V}$

For adibatic process: $P_{o}\left(V_{o}\right)^{\gamma}=P_{a}(V)^{\gamma}$

$\Longrightarrow P_{a}=P_{o}\left(\frac{V_{o}}{V}\right)^{\gamma}$

As $\gamma>1 \quad$ (always) $\Longrightarrow P_{i}>P_{a}$