📚 Practice Mode

Composition of air - class-VII

Learn at your own pace with hints and detailed explanations

1 / 63
Multiple Choice

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

  1. the reaction is endothermic and requires very high temperature
  2. the reaction can be initiated only in presence of a catalyst
  3. oxides of nitrogen are unstable
  4. $N _{2}$ and $O _{2}$ are unreactive
Change Mode