Which of the following conditions is used to obtain atomic $Cl$ from molecular $Cl_2$?

Le Chatelier's principle is applicable only to a

For the exothermic reaction $Cl_{2(g)} + 3F_{2(g)} \rightleftharpoons 2ClF_{3(g)}$,$\Delta_r H = -329 \ kJ$,which of the following will increase the quantity of $ClF_3$ in the equilibrium mixture?

Consider the following reaction and determine which of the conditions will shift the equilibrium position to the right?
$4NH_{3(g)} + 5O_{2(g)} \rightleftharpoons 4NO_{(g)} + 6H_2O_{(g)} + \text{Heat}$

In the manufacture of ammonia by Haber's process,$N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)} + 92.3 \ kJ$,which of the following conditions is unfavourable?

For the following balanced reaction occurring at a constant temperature,what will be the change in the concentration of $CO$ if the volume of the system is decreased?
$2CO_{(g)} \rightleftharpoons O_{2(g)} + 2CO_{2(g)}$