Composition of air - class-VII

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Question 1 of 63

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

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the reaction is endothermic and requires very high temperature

the reaction can be initiated only in presence of a catalyst

oxides of nitrogen are unstable

$N _{2}$ and $O _{2}$ are unreactive

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