A) \[N{{H}_{2}}CON{{H}_{2}}\]
B) \[{{H}_{2}}NCONHN{{H}_{2}}.HCl\]
C) \[{{H}_{2}}N.N{{H}_{2}}.2HCl\]
D) \[{{C}_{6}}{{H}_{5}}NHN{{H}_{2}}.2HCl\]
Correct Answer: C
Solution :
For Lassaigne's test of N, compound must contain N in addition to carbon, so that NaCN can be formed in sodium extract.
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