question_answer

Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:

Which of the following will give yellow precipitate with\[{{I}_{3}}/NaOH\]? (1)\[IC{{H}_{2}}COC{{H}_{2}}C{{H}_{3}}\] (2)\[C{{H}_{3}}COOCOC{{H}_{3}}\] (3)\[C{{H}_{3}}CH(OH)C{{H}_{2}}C{{H}_{3}}\] (4)\[C{{H}_{3}}COOH\]

A)  1, 2 and 3 are correct

B)  1 and 2 are correct

C)  2 and 4 are correct

D)  1 and 3 are correct

Correct Answer: D

Solution :

                  \[C{{H}_{3}}\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,C{{H}_{2}}C{{H}_{3}}\xrightarrow{{{I}_{2}}}C{{H}_{3}}COC{{H}_{2}}C{{H}_{3}}\]