Two aromatic compounds having formula C7H8O which are easily identifiable by FeCl3 solution test (violet colouration) are:
o-cresol and benzyl alcohol
m-cresol and p-cresol
methyl phenyl ether and benzyl alcohol
o-cresol and p-cresol
A
o-cresol and p-cresol
B
m-cresol and p-cresol
C
o-cresol and benzyl alcohol
D
methyl phenyl ether and benzyl alcohol
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Solution
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o-, m- and p- cresol all contain the phenolic group, thus they give violet coloration with FeCl3 whereas benzyl alcohol and methyl phenyl ether do not contain the phenolic group, hence give no coloration with FeCl3.
Hence the pair of compounds which are identifiable by FeCl3 is o-cresol and benzyl alcohol.
Option A is correct.
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