Le Chatelier's principle is applicable to which of the following?

In which reaction will an increase in the volume of the container favour the formation of products?

Some inert gas is added at constant volume to the following reaction at equilibrium:
$NH_4HS_{(s)} \rightleftharpoons NH_{3(g)} + H_2S_{(g)}$
Predict the effect of adding the inert gas.

Which condition is more favorable for the melting of ice?

On increasing temperature,the equilibrium constant of exothermic and endothermic reactions,respectively

$H_2O_{(s)} \rightleftharpoons H_2O_{(\ell)}$
Which of the following statements are correct for the above reaction?
$(A)$ At $273 \ K$ and $1 \ atm$, $\Delta G = 0$ and $\Delta S > 0$.
$(B)$ On increasing pressure, more ice will melt.
$(C)$ On increasing pressure, the melting point of ice will decrease.
$(D)$ The melting point of ice increases on increasing pressure.