A) Phenyl hydrazine
B) \[{{H}_{2}}N.N{{H}_{2}}\]
C) Semi carbazide
D) \[HCN\]
Correct Answer: D
Solution :
\[C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-H+HCN\xrightarrow[KOH]{base}C{{H}_{3}}-\overset{OH}{\mathop{\overset{|}{\mathop{\underset{CN}{\mathop{\underset{|}{\mathop{C}}\,}}\,}}\,}}\,-H\] \[C{{H}_{3}}\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-C{{H}_{3}}+HCN\xrightarrow[KOH]{base}\] \[C{{H}_{3}}-\overset{CN}{\mathop{\overset{|}{\mathop{\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,}}\,}}\,-C{{H}_{3}}\]
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