Q. 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 $
BHUBHU 2011
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}} $
