Acetone gives:
Correct answer: D. Iodoform test positive
- A. Fehling solution test positive
- B. Silver mirror test positive
- C. Lucas test positive
- D. Iodoform test positive
- E. Benedicts test positive
Explanation
Acetone reacts with excess iodine in a basic condition to form the carboxylic acid with one less carbon (ethanoic acid), and a yellow precipitate of iodoform is obtained. Thus acetone will give a positive iodoform test due to the formation of iodoform (triiodomethane) when reacted with excess iodine in basic conditions.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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