p-Block elementsHard

Question

The compound which on strong heating gives oxygen is :

Options

A.AgNO3
B.BaO2
C.Pb(NO3)2
D.CaCO3

Solution

AgNO3 Ag + NO2 + 1/2O2    ;    2BaO2 2BaO + O2.
Pb(NO3)2 PbO + 2NO2 + 1/2O2      CaCO3 CaO + CO2

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