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On heating compound (A) gives a gas (B) ...

On heating compound (A) gives a gas (B) which is a constituent of air . This gas when treated `H_(2)` in the presence of a catalyst gives another gas (C) which is basic in nature. (A) should not be :

A

`Pb (NO_(3))_(2)`

B

`NH_(4) NO_(2)`

C

`NaN_(3)`

D

`(NH_(4))_(2) Cr_2 O_7`

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