NEET2026ChemistryHydrocarbonsActual
For the following reaction sequence, choose the correct option
Options
- ABoth P and Q are carbonyl compounds.
- BIf P is the sodium salt of a carboxylic acid, Q is a primary alcohol.
- CP and Q are aromatic compounds.
- DIf P gives a carboxylic acid on acidification, Q gives a poisonous gas on exposure to air and light.
Correct answer
D. If P gives a carboxylic acid on acidification, Q gives a poisonous gas on exposure to air and light.
Step-by-step solution
The first step is the Friedel-Crafts acylation of benzene with acetyl chloride ( CH ₃ COCl ) and anhydrous AlCl ₃ , which produces acetophenone ( C ₆ H ₅ COCH ₃ ). The second step is the haloform reaction. Acetophenone has a methyl ketone group and reacts with sodium hypochlorite ( NaOCl ) to form sodium benzoate ( C ₆ H ₅ COONa ) and chloroform ( CHCl ₃ ). Thus, the products P and Q are sodium benzoate and chloroform. Sodium benzoate ( P ) on acidification yields benzoic acid ( C ₆ H ₅ COOH ). Chloroform ( Q ) on