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NEET2004ChemistryAldehydes and KetonesActual

Assertion : Isobutanal does not give iodoform test. Reason : It does not have -hydrogen.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

C. If assertion is true but reason is false

Step-by-step solution

Isobutanal has -hydrogen atom. Acetaldehyde, acetone and methyl ketones having CH ₃ CO group undergo haloform reaction. The hydrogen atoms of the methyl group are first replaced by halogen atoms. This reaction is used as a test of CH ₃ CO - group. Due to absence of CH ₃ CO - group isobutanal does not give iodoform test.

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