question_answer

Two aromatic compounds having formula \[{{C}_{7}}{{H}_{8}}O\]which are easily identifiable by \[FeC{{l}_{3}}\]solution test (violet colouration) are

A)  o-cresol and benzyl alcohol

B)  m-cresol and p-cresol

C)  o-cresol and p-cresol

D)  methyl phenyl ether and benzyl alcohol

Correct Answer: A

Solution :

                 \[o-,\text{ }m-\] and \[p-\]cresol all contain phenolic group, thus they give violet colouration with \[FeC{{l}_{3}}\]whereas benzylalcohol and methyl phenyl ether donot contain phenolic group, hence give no colouration with \[FeC{{l}_{3}}\]Hence the pair of compounds which are identifiable by \[FeC{{l}_{3}}\]is o-cresol and benzyl alcohol.