JEE Mains 29-July-2022 Shift 1 Solved Paper

Li2O,NaNO2
As per NCERT lithium nitrate when heated gives lithium oxide, Li2O. Whereas other alkali metal nitrates decompose to give the corresponding nitrite.
4LiNO3⟶2Li2O+4NO2+O2
2NaNO3⟶2NaNO2+O2
However, the decomposition product of NaNO3 is temperature dependent process as shown in the below reaction.
NaNO3‌

‌ ∆ ⟶

500∘C

NaNO2( s)+‌

1

2

O2(g)
∆↓,800∘C
‌Na2O( s)+N2(g)+O2(g)
As the temperature is not mentioned, we can go by the answer. (C)