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MHT CET202611 April 2026Evening ShiftChemistryHaloalkanes and HaloarenesActual

Which of the following compounds is formed when chloroform is exposed to air and light?

Options

  1. APhosgene.
  2. BPhosphine.
  3. CCarbon dioxide
  4. DCarbon tetrachloride

Correct answer

A. Phosgene.

Step-by-step solution

Chloroform ( CHCl₃ ) undergoes slow oxidation in the presence of air and light to form a highly poisonous gas called phosgene ( COCl₂ ). The chemical equation for this reaction is: 2CHCl₃ + O₂ h 2COCl₂ + 2HCl Thus, phosgene is the compound formed. Answer: Phosgene.

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