Question

Dinitrogen and dioxygen, the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because

• A. N2 is unreactive in the condition of atmosphere
• B. Oxides of nitrogen are unstable
• C. Reaction between them can occur in the presence of a catalyst
• D. The reaction is endothermic and require very high temperature

Answer 1

Answer: (D)

The reaction is endothermic and require very high temperature

Answer 2

$N_2$ is unreactive, its reaction with oxides is endothermic and require very high temperature.