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MHT CET Chemistry Aldehydes and Ketones 2026 MHT CET 2026 (19 April Shift 2)

MHT CET Chemistry Question (2026) — Solution

Question

What is the product formed on Rosenmund reduction of benzoyl chloride ?

Options

  1. A. Benzene
  2. B. Benzyl alcohol
  3. C. Benzaldehyde
  4. D. Chlorobenzene

Answer

C. Benzaldehyde

Step-by-step solution

Rosenmund reduction is the catalytic hydrogenation of an acid chloride to an aldehyde. The reagent used is hydrogen gas in the presence of a palladium catalyst supported on barium sulfate (H_2 / Pd-BaSO_4). When benzoyl chloride (C_6H_5COCl) is subjected to Rosenmund reduction, it is reduced to benzaldehyde (C_6H_5CHO). The reaction is: C_6H_5COCl + H_2 Pd/BaSO_4 C_6H_5CHO + HCl Therefore, the product formed is benzaldehyde. Answer: Benzaldehyde

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