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Engineering Exams RRB-JE CMA (Chemical and Metallurgical Assistant) Technical Abilities 2025 22.04.25 Paper-2 Shift-1 Medium +1 -0.33
Identify the INCORRECT pair from the given options.
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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