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NEET CHEMISTRYAldehydes, Ketones and Carboxylic AcidsMedium

Question

Consider the following reaction: The product 'A' is:

A

C6H5OH

B

C6H5COCH3

C

C6H5Cl

D

C6H5CHO

Step-by-Step Solution

Based on the AIPMT 2012 context and the options provided, the reaction refers to the preparation of benzaldehyde (C6H5CHOC_6H_5CHO). A common name reaction appearing in this exam yielding benzaldehyde is the Rosenmund Reduction, where benzoyl chloride (C6H5COClC_6H_5COCl) is hydrogenated over a catalyst of palladium on barium sulphate (Pd/BaSO4Pd/BaSO_4) poisoned with sulphur or quinoline.

C6H5COCl+H2→Pd/BaSO4C6H5CHO+HClC_6H_5COCl + H_2 \xrightarrow{Pd/BaSO_4} C_6H_5CHO + HCl

Other possibilities include the Etard Reaction (oxidation of toluene with chromyl chloride) or Gattermann-Koch reaction (benzene with CO/HCl), both of which also yield benzaldehyde [1]. The product 'A' is Benzaldehyde.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Aldehydes, Ketones and Carboxylic Acids. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYAldehydes, Ketones and Carboxylic Acidsconsiderfollowingreactionproduct

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