Predict the product 'B'.

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Solution

The correct option is C
Grignard reagent act as a nucleophile in presence of a electrophilic site. Carbon in the carbonyls are electrophilic in nature, hence, Grignard reagent will undergo nucleophilic addition reactions.

Compound "A" on treating with $H_{2} S O_{4}$ undergo dehydration reaction.
Dehydration of alcohol is an E1 elimination reaction. The rate of the reaction depends on the stability of the carbocation formed.

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