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:
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a
NH42Cr2O7
b
NaN3
c
PbNO32
d
NH4NO2
answer is C.
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Detailed Solution
The gas present in air that can react with hydrogen in the presence of catalyst to form a basic gas NH3 is N2. The N2 will be given by heating all the three compounds exceptPbNO32