Question

Aldehyde with $N{H}_2-N{H}_2$ forms

• A. Hydrazone
• B. Aniline
• C. Nitrobenzene
• D. None of these

Answer 1

Answer: (A)

Aldehydes and ketones with $N{H}_2-N{H}_2$ forms hydrazones. This is Nucleophilic additon followed by Elimination reaction

$\text{RCHO}+{\text{H}}_{\text{2}}\text{N}-{\text{NH}}_{\text{2}}\to \text{RCH}=\text{N}-{\text{NH}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}$