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Chemistry Hydrocarbon General Single Correct MCQ
Published on: August 14, 2026

An organic compound with molecular formula C7H8O dissolves in NaOH and gives a characteristic colour with FeCl3. On treatment with bromine, it gives a tribromoderivative, C7H5OBr3. The compound is

A
Benzyl alcohol
B
O-Cresol
C
M-Cresol
D
P-Cresol

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Verified by Experts
The correct answer is:
C

Since the compound dissolves in NaOH, and gives a characteristic colour with FeCl3, it must be a phenol. Now three phenols having the M.F. C7H8O are o-, m- or p-cresol. Since the compound on treatment with Br2 gives a tribromoderivative, therefore, two o- and one p-position w.r.t. OH group must be free. That is the phenol is m-cresol.

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