Which reagent can distinguish ketones from methyl ketones
Correct answer: B. Iodine in NaOH
- A. 2, 4 - DNPH
- B. Iodine in NaOH
- C. Sodium nitroprusside
- D. hydrogen cyanide
Explanation
Iodoform test (I₂ / NaOH) is the correct reagent for distinguishing methyl ketones
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About Reactivity of Aldehydes and Ketones
The polar carbonyl group makes aldehydes and ketones undergo nucleophilic addition, reduction and condensation reactions. Aldehydes are generally more reactive and oxidise readily to carboxylic acids, whereas ketones resist mild oxidation; reactions with hydrogen cyanide, sodium bisulfite and 2,4-DNP help identify their behaviour.
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