In an endothermic reaction,the value of the change in enthalpy $(\Delta H)$ is

$A$ gas expands from a volume of $1 \ m^{3}$ to a volume of $2 \ m^{3}$ against an external pressure of $10^{5} \ Nm^{-2}$. The work done by the gas will be

The change in internal energy $\Delta U$ of an ideal gas depends on:

At a definite temperature,for which of the following reactions will the value of $(\Delta E - \Delta H)$ be maximum?

The formula for the Joule-Thomson coefficient is ............. .

An ideal gas undergoes isothermal expansion at constant pressure. During the process