Answer Q.16, Q.17 and Q.18 by appropriately matching the information given in the three columns of the following table.
Columns 1, 2 and 3 contain starting materials, reaction conditions, and type of reactions, respectively.
Column 1 — (I) Toluene; (II) Acetophenone; (III) Benzaldehyde; (IV) Phenol
Column 2 — (i) NaOH/Br2; (ii) Br2/hν; (iii) (CH3CO)2O/CH3COOK; (iv) NaOH/CO2
Column 3 — (P) Condensation; (Q) Carboxylation; (R) Substitution; (S) Haloform
For the synthesis of benzoic acid, the only CORRECT combination is