Complete hydrolysis of RNA yields,
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → β-D-ribose, phosphoric acid & nitrogen containing heterocyclic bases
In RNA the sugar is β-D-ribose and the bases are adenine, guanine, cytosine and uracil; in DNA the sugar is β-D-2-deoxyribose and thymine replaces uracil.
Why the other options are incorrect
Option (1) — Incorrect. β-D-2-deoxyribose is the sugar of DNA, not RNA.
Option (2) — Incorrect. The sugar is right, but the bases are heterocyclic (they contain nitrogen in the ring), not homocyclic.
Option (4) — Incorrect. It has the DNA sugar, “phosphorus acid” in place of phosphoric acid, and homocyclic bases.
NCERT (2026-27 edition):
Chemical Composition of Nucleic Acids
