Question detail
Which of the following is a ketone?
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. Propanal
- B. Butan-2-one
- C. Hexanal
- D. Pentanoic acid
Answer
Butan-2-one
Explanation
Butan-2-one is a ketone, characterized by having a carbonyl group (C=O) bonded to two carbon atoms. Propanal and hexanal are aldehydes, while pentanoic acid is a carboxylic acid.
Common mistake
Incorrect Naming of Aldehydes
Students often confuse the naming of aldehydes with ketones, mistakenly using the suffix '-one' instead of '-al'.
Remember that aldehydes are named with the suffix '-al' (e.g., ethanal), while ketones use '-one' (e.g., propanone).
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