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NTA Abhyas JEE Main2020ChemistryAldehydes and KetonesPractice

A compound A has a molecular formula C 2 C l 3 O H . It reduces Fehling solution and on oxidation gives a monocarboxylic acid B . A is obtained by action of chlorine on ethyl alcohol. A is

Options

  1. AChloral
  2. BC H C l 3
  3. CC H 3 C l
  4. DChloroacetic acid

Correct answer

A. Chloral

Step-by-step solution

C 2 Cl 3 OH A + Fehling sol . → Cu 2 O Red ppt It means - C H O group is present. C 2 Cl 3 OH A → Oxidation CCl 3 − COOH Monocarboxylic   acid It means only one − CHO group is present. C 2 H 5 O H + C l 2 → C H 3 C H O + 2 H C l C H 3 C H O + 3 C l 2 → C C l 3 C H O C h l o r a l + 3 H C l

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