A) \[{{N}_{2}}O\] with sodium metal in liquid ammonia forms sodium azide and nitrogen gas is liberated.
B) Ammonia is oxidized to nitrogen by dilute solution of sodium hypochlorite in presence of glue.
C) Ammonium dichromate on heating decomposes to give nitrogen and a green coloured compound.
D) CaNCN on hydrolysis produces a white precipitate and a gas which turns filter paper moistened with copper sulphate solution deep blue.
Correct Answer: B
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