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Manipal MET2017ChemistryCarboxylic Acid Derivatives

Which one of the following reacts with Grignard reagent-to form an addition product which can be hydrolysed to a carboxylic acid?

Options

  1. AO ₂
  2. BCO ₂
  3. CSO ₂
  4. DNone of these

Correct answer

B. CO ₂

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