Higher yield of $NO$ in $N_{2(g)} + O_{2(g)} \rightleftharpoons 2 NO_{(g)}$ can be obtained at [ $\Delta H$ of the reaction $= +180.7 \ kJ \ mol^{-1}$ ]
$A.$ Higher temperature
$B.$ Lower temperature
$C.$ Higher concentration of $N_2$
$D.$ Higher concentration of $O_2$
Choose the correct answer from the options given below:

The effect of the addition of helium gas to the following reaction in an equilibrium state is:
$PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$

$A$ reversible reaction is in equilibrium. If a factor is changed which affects it,then:

The reaction $A + B \rightleftharpoons C + D + \text{heat}$ has reached equilibrium. The reaction may be made to proceed forward by:

The equilibrium $SO_2Cl_{2(g)} \rightleftharpoons SO_{2(g)} + Cl_{2(g)}$ is attained at $25 \ ^oC$ in a closed container and inert gas helium is introduced at constant volume. Which of the following statements are not correct?
$(a)$ Concentrations of $SO_2, Cl_2$ and $SO_2Cl_2$ change
$(b)$ More chlorine is formed
$(c)$ Concentration of $SO_2$ is reduced
$(d)$ More $SO_2Cl_2$ is formed

For the balanced reaction $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g) + \text{Heat}$,which of the following conditions will favor the forward reaction?