Identify the INCORRECT pair from the given options.
-
A.
Three-carbon chain with a ketone group - Propanone
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B.
Alkane having three carbon atoms - Propane
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C.
Alcohol - Propanol
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D.
Aldehyde - Propanone
Correct Answer:
D. Aldehyde - Propanone
Explanation:
The pair Aldehyde - Propanone is incorrect because propanone is actually a ketone, not an aldehyde. Aldehydes typically have the carbonyl group at the end of the carbon chain, whereas ketones like propanone have it located within the chain. Propanal is the three-carbon aldehyde that corresponds to this structure. The other options are accurate: propanone is a three-carbon ketone, propane is a three-carbon alkane, and propanol is an alcohol.
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