• # question_answer Which of the following can give iodo form test? (I) $C{{H}_{3}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}$ (II) ${{C}_{6}}{{H}_{5}}-C{{H}_{2}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}$ (III) $C{{H}_{3}}-CHO$ (IV) ${{C}_{6}}{{H}_{5}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{3}}$ A)  Only IV                       B)  III and IV           C)  III and IV                     D)  All of these

Correct Answer: C

Solution :

In (I) and (II) the hydrogen atom of?CH3 group is not attacked by the base rather more acidic H-atom about two carbonyl group in (I) and methylene H-atom about phenyl group in (II) is attacked.

You need to login to perform this action.
You will be redirected in 3 sec