In the following reaction sequence Q, R, S and T are the major products.
The correct statement(s) about and is (are)
The correct statement(s) about and is (are)
- (A)S on warming with ammoniacal results in the formation of silver mirror.✓ Correct
- (B) on treatment with (excess)/ UV gives gammaxane.✓ Correct
- (C) is a heterocylic compound.✓ Correct
- (D) on acid catalyzed intermolecular cyclization followed by treatment with gives 9, 10-dihydroxyanthracene.
Answer: (A), (B), (C)
Solution
Based on the reaction sequence provided:
(A) Product S contains an aldehyde group, which gives a positive Tollens' test (silver mirror) with ammoniacal . Correct.
(B) Product Q is benzene, which on treatment with excess under UV light gives gammaxane (benzene hexachloride, C₆H₆Cl₆). Correct.
(C) Product T is a heterocyclic compound (contains a ring with at least one non-carbon atom). Correct.
(D) The described transformation does not produce 9,10-dihydroxyanthracene from R. Incorrect.
(A) Product S contains an aldehyde group, which gives a positive Tollens' test (silver mirror) with ammoniacal . Correct.
(B) Product Q is benzene, which on treatment with excess under UV light gives gammaxane (benzene hexachloride, C₆H₆Cl₆). Correct.
(C) Product T is a heterocyclic compound (contains a ring with at least one non-carbon atom). Correct.
(D) The described transformation does not produce 9,10-dihydroxyanthracene from R. Incorrect.
JEE Advanced · 2026 · 17 May 2026 · Paper 1 · One or more correct options