Match List-I with List-II.

**List-I (Substrates/Reagents)**
(a) $R-CO-CH_3$
(b) Benzene, $CO$, $HCl$, Anhyd.

Question

Match List-I with List-II.

**List-I (Substrates/Reagents)**
(a) $R-CO-CH_3$
(b) Benzene, $CO$, $HCl$, Anhyd. $AlCl_3$
(c) $R-CH_2-COOH$, $X_2$/Red P
(d) $R-COOH + R'OH$, $H^+$

**List-II (Name of reactions)**
(i) Hell-Volhard-Zelinsky reaction
(ii) Gattermann-Koch reaction
(iii) Haloform reaction
(iv) Esterification

Choose the correct answer from the options given below:

Accepted Answer

(a) Compounds containing a methyl ketone group ($R-CO-CH_3$) undergo the **Haloform reaction** when treated with sodium hypohalite ($NaOX$).
(b) Benzene reacts with $CO$ and $HCl$ in the presence of anhydrous $AlCl_3$ or $CuCl$ to form benzaldehyde. This is known as the **Gattermann-Koch reaction**.
(c) Carboxylic acids having an $lpha$-hydrogen ($R-CH_2-COOH$) undergo halogenation at the $lpha$-position when treated with $Cl_2$ or $Br_2$ in the presence of red phosphorus to give $lpha$-halocarboxylic acids. This is the **Hell-Volhard-Zelinsky (HVZ) reaction**.
(d) Carboxylic acids ($R-COOH$) react with alcohols ($R'OH$) in the presence of an acid catalyst to form esters. This process is called **Esterification**.

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