On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H2 in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be : (

Question

On heating compound (A) gives a gas (B) which is a constituent of air. This gas when treated with H2 in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be :

(A) (NH4)2Cr2O7
(B) NH4NO2
(C) Pb(NO3)2
(D) NaN3

Prashant Kotian · Accepted Answer

Correct answer: C. (1) Pb(NO3)2  PbO + 2NO2 (2) NH4NO2  N2 + 2H2O (3) (NH4)2Cr2O7  N2 + Cr2O3 + H2O (4) NaN3    C º 3N2 + 2Na

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