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KCET2021ChemistryAldehydes and Ketones

An organic compound X on treatment with PCC in dichloromethane gives the compound Y . Compound Y reacts with I ₂ and alkali to form yellow precipitate of triiodomethane. The compound X is

Options

  1. ACH ₃ CHO
  2. BCH ₃ COCH ₃
  3. CCH ₃ CH ₂ OH
  4. DCH ₃ COOH

Correct answer

C. CH ₃ CH ₂ OH

Step-by-step solution

Compound (Y) gives iodoform test, that means it contains acetyl group PCC is an oxidising agent which oxidised the alcohol to aldehyde or ketone (depends upon the reactant alcohol). That means X is an alcohol. From the given information, it is concluded that the compound X is an alcohol (which contain two carbon). Thus, the alcohol is CH ₃ CH ₂ OH . The reaction involves are as follows:

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