question_answer

The reagent with which both acetaldehyde and acetophenone reacts easily are

A)  Fehlings solution

B)  Schiffs reagent

C)  Tollens reagent

D)  sodium bisulphite

E)  2, 4-dinitrophenylhydrazine

Correct Answer: E

Solution :

                Aldehydes and aromatic ketones both can react with 2, 4-dinitrophenyl hydrazine as \[C{{H}_{3}}CH\,\,N\cdot NH{{C}_{6}}{{H}_{3}}{{(N{{O}_{2}})}_{2}}\xrightarrow{{}}\]\[\underset{acetaldehyde\,phenyl\,hydrazone\,\,derivative}{\mathop{C{{H}_{3}}CH=N\cdot NH{{C}_{6}}{{H}_{3}}{{(N{{O}_{2}})}_{2}}}}\,+{{H}_{2}}\]