List of top Chemistry Questions on Thermodynamics terms asked in JEE Main

Consider the following changes : $\text{SnO}_2 \rightarrow \text{SnO}$ $\Delta G_1^o$ and $\text{PbO}_2 \rightarrow \text{PbO}$ $\Delta G_2^o$. Select the correct option
Which one of the following reactions does not occur during extraction of copper?
Which one of the following reactions does not occur during extraction of copper?
The combustion of benzene $ (l)$ gives $CO_2(g)$ and $H_2O(l)$ . Given that heat of combustion of benzene at constant volume is $-3263.9 \, kJ \, mol^{-1}$ at $25^{\circ} C$ ; heat of combustion (in $ kJ \, mol^{-1}$ ) of benzene at constant pressure will be -$ (R = 8.314 \, JK^{-1} \, mol^{-1}) $