List of top Chemistry Questions on Thermodynamics terms asked in AFMC

Identify the reaction for which $\Delta H\ne \Delta E.$

One mole of an ideal gas is allowed to expand reversibly and adiabatically from a temperature of $27^{\circ} C$ The work done is $3 \,kJ$. The final temperature of the gas is equal to $\left[C_{v}=20\, K J^{-1}\right]:$