Moderate

Methyl ketones can be characterised by performing:

Correct answer: A. Iodoform test

  • A. Iodoform test
  • B. Schiff's test
  • C. Benedict's reagent test
  • D. Tollen's test
  • E. Cannizzaro test

Explanation

When methyl ketone is heated with iodine in the presence of sodium hydroxide, yellow precipitate of iodoform is obtained. Hence, methyl ketones are characterized by iodoform test. In this reaction, methyl ketone is converted to the sodium salt of carboxylic acid.

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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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