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Nitrogen gas is prepared :...

Nitrogen gas is prepared :

A

by heating ammonium nitrate

B

by reacting excess chlorine with liquor ammonia

C

by passing `HNO_(3)` vapours on red hot copper

D

by heating lead nitrate

Text Solution

Verified by Experts

The correct Answer is:
C
(1) `(NH_(4)) NO_(3) " gives " N_(2)O`, (2) chlorine (excess) with liquor `NH_(3)` forms `NCl_(3)` and (4) `Pb(NO_(3))_(2)` gives `NO_(2)` not `N_(2)` on heating
(3) `5Cu ("red hot") + 2HNO_(3) rarr 5CuO + N_(2) uarr + H_(2)O`
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