Question

The iodoform test is not given by

• A. $ C{{H}_{3}}\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,HC{{H}_{3}} $
• B. $ C{{H}_{3}}\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}C{{H}_{3}} $
• C. $ C{{H}_{3}}C{{H}_{2}}OH $
• D. $ C{{H}_{3}}C{{H}_{2}}\overset{\begin{smallmatrix} O \\ |\,| \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}C{{H}_{3}} $

Answer 1

Answer: (D)

The alcohols having the structure $ C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{C}}\,H- $ or ketones having the unit $ C{{H}_{3}}-\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\mathop{C}}\,H- $ give iodoform test. $ C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{3}} $ does not have such kind of structure, hence it will not give iodoform test.