Chemistry Aldehydes & Ketones PMC 2021
PMDC Verified Question 48 of 94
The carbonyl compound which is attached with at least one H atom at one side is called as _?
A
Ketones
B
Aldehydes
C
Ethers
D
Alkyl halides
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Aldehydes
Concept:

Organic functional groups are strictly defined by their atomic arrangements.

Solution:

  • A carbonyl group consists of a carbon double-bonded to an oxygen (\( C=O \)).


  • If this carbonyl carbon is bonded to at least one hydrogen atom (yielding the \( -CHO \) group), the compound is classified as an Aldehyde.


  • The simplest example is formaldehyde, where the carbon is attached to two hydrogen atoms. All other aldehydes have one hydrogen and one alkyl/aryl group.


Why other options are incorrect:

Ketones have two carbon groups attached to the carbonyl carbon and NO hydrogens. Ethers contain an oxygen single-bonded to two carbons (\( C-O-C \)). Alkyl halides contain halogens.

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