KEAM 2014 Physics and Chemistry Paper

Compounds having methyl ketone (−COCH2)
group or 2∘ alcohol group (CH3−

CH

|‌‌‌‌ Cl‌‌‌

−) or ethanol when treated with iodine in the presence of alkali gives yellow coloured iodoform and this reaction is called iodoform test.
The structures of the given compounds are
(b) CH3−

‌‌‌C6H5 |‌‌‌

CH

−OH
1 -phenylethanol
(gives iodoform test)(d) C2H5OH
ethanol
(gives iodoform test)
(e) C6H5−

CH

|‌‌‌‌ C6H5

diphenyl methanol
(No CH3−

CH

|‌‌‌ OH

− group.
so, it can not give iodoform test)
Thus, among the given diphenyl methanol does not give iodoform reaction.