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In the above reaction product 'P' is: CHO → (i) CO2 → P → (ii) H3O+

1. CHO
2. COOH
3. OH
4. C6H5—C—COOH

Correct answer: COOH

Solution

The reaction involves the oxidation of an aldehyde group (-CHO) to a carboxylic acid group (-COOH) under the given conditions. This is a common transformation in organic chemistry.

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