Question detail
Which statement best describes the difference between aldehydes and ketones?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Aldehydes and ketones (A-level only)
Question
- A. Aldehydes have a carbonyl group at the end of the carbon chain, while ketones have it in the middle.
- B. Aldehydes are always more reactive than ketones.
- C. Ketones can be oxidized to carboxylic acids, while aldehydes cannot.
- D. Aldehydes do not have hydrogen atoms attached to the carbonyl carbon.
Answer
Aldehydes have a carbonyl group at the end of the carbon chain, while ketones have it in the middle.
Explanation
Aldehydes are defined by having the carbonyl group (C=O) at the terminal position of the carbon chain, while ketones have the carbonyl group located within the chain. This key difference affects their reactivity and the types of reactions they undergo.
Common mistake
Confusing Aldehydes and Ketones
Students often confuse aldehydes and ketones, thinking they are the same due to both containing a carbonyl group.
Remember that aldehydes have the carbonyl group at the end of the carbon chain, while ketones have it within the chain.
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