A) Secondary butyl alcohol
B) Iso-propyl alcohol
C) Diethyl ketone
D) Ethyl alcohol
Correct Answer: C
Solution :
lodoform reaction is given by only those compounds that have either \[C{{H}_{3}}-\underset{|}{\mathop{C}}\,=O\]or \[C{{H}_{3}}\overset{|}{\mathop{C}}\,H-OH\]group, \[\underset{\begin{smallmatrix} (sec-butyl\,alcohol\,gives\, \\ idoform\,reaction) \end{smallmatrix}}{\mathop{{{C}_{2}}{{H}_{5}}\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,HC{{H}_{3}}}}\,\] \[\underset{\begin{smallmatrix} (iso-propyl\,alcohol\, \\ gives\,iodoform\,reaction) \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,H}}\,-C{{H}_{3}}}}\,\] \[\underset{\begin{smallmatrix} \text{diethyl}\,\text{keton}(does\,not \\ \,give\,iodoform\,reaction) \end{smallmatrix}}{\mathop{{{C}_{2}}{{H}_{5}}-\underset{O}{\mathop{\underset{||}{\mathop{C}}\,}}\,-{{C}_{2}}{{H}_{5}}}}\,\] \[\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{ethyl}\,\text{alcohol} \\ (gives\,iodoform\,reaction) \end{smallmatrix}}{\mathop{C{{H}_{3}}\underset{OH}{\overset{H}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}\,}}}\,H}}\,\]
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