1) Aldehyde or ketones when treated with $C_{6}H_{5}-NH-NH_{2}$ , the product formed is A) semicarbazone B) phenlhydrazone C) hydrazone D) oxime Answer: Option BExplanation:Aldehydes or ketones when treated with C6H5-NH-NH2 (phenylhydrazine) then product formed is phenylhydrazone. This is a nucleophilic addition reaction.
