Select the correct statement(s) about the reaction of Grignard reagents with carbonyl compounds followed by acid hydrolysis.

AAn ester with excess reagent gives a tertiary alcohol in which two of the alkyl groups come from the Grignard reagent.
BAn aldehyde other than formaldehyde gives a secondary alcohol.
CFormaldehyde gives a primary alcohol.
DA ketone gives a secondary alcohol.

Answer: A, B, C

HCHO

gives

R - CH X_{2} OH

(primary), and any other aldehyde gives

R - CH (OH) - R X^{'}

(secondary). An ester adds twice, so the tertiary carbinol carbon carries two identical groups from the Grignard reagent. A ketone gives a tertiary alcohol, not a secondary one.

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Select the correct statement(s) about the reaction of Grignard reagents with carbonyl compounds followed by acid hydrolysis.

Answer: A, B, C

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