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Multiple Choice
Which of the following is the correct name for the functional group containing a carbonyl group bonded to a hydrogen atom ( bonded to )?
A
Ketone
B
Aldehyde
C
Alcohol
D
Carboxylic acid
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Verified step by step guidance
1
Identify the functional group described: a carbonyl group (C=O) bonded directly to a hydrogen atom (H).
Recall the definitions of common carbonyl-containing functional groups: Ketones have the carbonyl carbon bonded to two carbon atoms, aldehydes have the carbonyl carbon bonded to at least one hydrogen atom, carboxylic acids have a carbonyl bonded to a hydroxyl group (-OH), and alcohols contain an -OH group without a carbonyl.
Match the description to the correct functional group: since the carbonyl is bonded to a hydrogen atom, this fits the definition of an aldehyde.
Confirm that ketones are excluded because their carbonyl carbon is bonded to two carbons, not a hydrogen.
Conclude that the correct name for the functional group with a carbonyl bonded to a hydrogen is 'aldehyde'.