In which of the following equilibrium, change in pressure will not aff

1.	In which of the following equilibrium, change in pressure will not affect the equilibrium ?
Answer» `N_(2(g))+3H_(2(g))hArr2NH_(3(g))` `H_(2(g))+I_(2(g))hArr2HI_((g))` `PCl_(5(g))hArrPCl_(3(g))+Cl_(2(g))` `N_(2)O_(4(g))hArr2NO_(2(g))` ANSWER :B

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