Question

Dinitrogen and dioxygen are main constituents of air-but these do not react with each other to form oxides of nitrogen because _____

• A. The reaction is endothermic and requires very high temperature.
• B. The reaction can be initiated only in presence of a catalyst
• C. Oxides of nitrogen are unstable
• D. $N_{2}$and $O_{2}$are unreactive

Answer 1

Answer: (A)

The reaction is endothermic and requires very high temperature.

Answer 2

: Dinitrogen and dioxygen do not react with each other at a normal temperature. At high temperature (in an automobine engine) when fossil fuel is burnt, these gases combine to yield significant quantities of NO and $NO_{2}$.