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JEE Main levelSingle correct optionDifficulty 2 of 3co077

The total number of alpha-hydrogens in 2-methylcyclohexanone (the methyl group is on the ring carbon next to C=O) is

A2
B3
C5
D6

Answer: B

Alpha carbons are the ring carbons attached to C=O. C2 bears the methyl group and one H. C6 is a

CH X_{2}

with two H. The methyl hydrogens are on a beta position. Total

= 1 + 2 = 3

.

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