Aldehyde contains which functional group at the end of the carbon chain?

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Multiple Choice

Aldehyde contains which functional group at the end of the carbon chain?

Explanation:
Recognizing the aldehyde hinges on spotting a carbonyl group at the end of the carbon chain. In aldehydes, the carbonyl carbon is bonded to one hydrogen and to the rest of the molecule, giving a terminal form of the carbonyl written as -CHO, the formyl group. So the aldehyde is characterized by this end-of-chain -CHO group. The other groups correspond to different functional groups: -COOH is the carboxyl group found in carboxylic acids, -NH2 is the amino group found in amines, and -OH is the hydroxyl group found in alcohols.

Recognizing the aldehyde hinges on spotting a carbonyl group at the end of the carbon chain. In aldehydes, the carbonyl carbon is bonded to one hydrogen and to the rest of the molecule, giving a terminal form of the carbonyl written as -CHO, the formyl group. So the aldehyde is characterized by this end-of-chain -CHO group. The other groups correspond to different functional groups: -COOH is the carboxyl group found in carboxylic acids, -NH2 is the amino group found in amines, and -OH is the hydroxyl group found in alcohols.

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