1) A gaseous mixture containing He,$CH_{4}$ and $SO_{2}$ was allowed to effuse through a fine hole then find what molar ratio of gases coming out initially ?(Given mixture contains $He,CH_{4}$ and $SO_{2}$ in 1:2:3 mole ratio) A) $\sqrt{2}:\sqrt{2}:3$ B) 2:2:3 C) 4:4:3 D) 1:1:3 Answer: Option CExplanation:$\frac{n'He}{n'CH_{4}}=\frac{1}{2}\sqrt{\frac{16}{4}}=\frac{1}{1}$ $\frac{n'He}{n'SO_{2}}=\frac{1}{3}\sqrt{\frac{64}{4}}=\frac{4}{3}$ So, molar ratio will be $n'He:n'CH_{4}:n'SO_{2}=4:4:3$
