p-Block elementsHard

Question

Nitrogen dioxide cannot be obtained by heating :

Options

A.KNO₃

B.Pb(NO₃)₂

C.Cu(NO₃)₂

D.AgNO₃

Solution

Alkali netal nitrates liberated O₂on heating.
2KNO₃ 2KNO₂ + O₂

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