For the equilibrium reaction $2NO \rightleftharpoons N_2 + O_2 + x \, cal$,which condition is suitable for the greater dissociation of $NO$?

In the following system,$PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$ at equilibrium,upon addition of xenon gas at constant $T$ & $p$,the concentration of

The reaction,$N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)}$ is exothermic and reversible. $A$ mixture of $N_{2(g)}$,$H_{2(g)}$,and $NH_{3(g)}$ is at equilibrium in a closed container. When a certain quantity of extra $H_{2(g)}$ is introduced into the container,while keeping the volume constant,then which statement among the following is true?

Le Chatelier's principle is not applicable to:

For the isomerization reaction $cis-2-pentene \rightleftharpoons trans-2-pentene$,the standard free energy change at $400 \ K$ is $-3.67 \ kJ/mol$. If more $trans-2-pentene$ is added to the reaction vessel,then ...........

Consider the equilibrium ${N_2}_{(g)} + 3{H_2}_{(g)} \rightleftharpoons 2N{H_3}_{(g)}$,$\Delta H = -93.6 \ kJ$. The maximum yield of ammonia is obtained by: