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Q. Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively.
Column 1 Column 2 Column 3
(I) Toluene (i) $NaOH/ Br_2$ (P) Condensation
(II) Acetophenone (ii) $Br_2/ hν$ (Q) Carboxylation
(III) Benzaldehyde (iii) ($CH_3CO)_2O/ CH_3COOK$ (R) Substitution
(IV) Phenol (iv) $NaOH/ CO_2$ (S) Haloform

The only CORRECT combination in which the reaction proceeds through radical mechanism is

JEE AdvancedJEE Advanced 2017Aldehydes Ketones and Carboxylic Acids

Solution:

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