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Q. Which of the following are classified as ketones?
  1. Acetone
  2. Formaldehyde
  3. Acetic acid
  4. Isopropanol
Select the correct option using the codes below:
Answer: Only 1
Notes: Acetone ((CH₃)₂CO) is the simplest ketone. Formaldehyde (HCHO) is an aldehyde, acetic acid (CH₃COOH) is a carboxylic acid, and isopropanol (C₃H₇OH) is an alcohol. Hence, among the options, only acetone is a ketone; the others belong to different functional groups.
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📌 Question Number: 34 in Organic Chemistry in the above course in App.