NEET UG CHEMISTRY MCQ: THERMODYNAMICS

Consider the following statements for the reaction between zinc and oxygen.

$\begin{aligned} & 2 \mathrm{Zn(s})+\mathrm{O}_2(\mathrm{g}) \longrightarrow 2 \mathrm{ZnO(s}) ; \\ & \Delta H=-693.8 \mathrm{~kJ~mol}^{-1} \end{aligned}$

I. The enthalpy of two moles of $\mathrm{ZnO}$ is less than the total enthalpy of two moles of $\mathrm{Zn}$ and one mole of oxygen by $693.8 \mathrm{~kJ}$

II. The enthalpy of two moles of $\mathrm{ZnO}$ is more than the total enthalpy of two moles of $\mathrm{Zn}$ and one mole of oxygen by $693.8 \mathrm{~kJ}$

III. $693.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$ energy is evolved in the reaction

IV. $693.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$ energy is absorbed in the reaction

Select the correct statements and choose the correct option.