Question

A colourless, neutral, paramagnetic oxide of Nitrogen $'P'$ on oxidation gives reddish brown gas $Q$. $Q$ on cooling gives colourless gas $R$. $R$ on reaction with P gives blue solid $S$. Identify $P , Q , R , S$, respectively

• A. $N _{2} O\, NO\, NO _{2} \,N _{2} O _{5}$
• B. $N _{2} O\, NO _{2}\, N _{2} O _{4} \,N _{2} O _{3}$
• C. $NO \,NO _{2} \,N _{2} O _{4}\, N _{2} O _{3}$
• D. $NO \,NO\, N _{2} O _{4} \,N _{2} O _{5}$

Answer 1

Answer: (C)

$NO \,NO _{2} \,N _{2} O _{4}\, N _{2} O _{3}$

Answer 2

$\underset{ P }{ NO } \xrightarrow{[ O ]} \underset{ Q }{ NO _{2}} \xrightarrow{\text { cooling }} \underset{ R }{ N _{2} O _{4}} \xrightarrow{[ H ]} \underset{S}{ N _{2} O _{3}}$