question_answer

In a flask of V litres, 0.2 moles of \[{{\text{O}}_{\text{2}}}\text{,0}\text{.4}\]moles of \[{{\text{N}}_{2}},\,0.1\]moles of \[\text{N}{{\text{H}}_{\text{3}}}\] and 0.3 moles of He gases are present at \[\text{27}{{\,}^{\text{o}}}\text{C}\text{.}\]If total pressure exerted by these non-reacting gases is 1 atm, the partial pressure exerted by \[{{\text{N}}_{2}}\]gas is

A)  0.4 atm                               

B)  0.3 atm

C)  0.2 atm                               

D)  0.1 atm