Indian Forest Service (Mains), Chemistry optional · 2025 · Paper II

Q5(b). Complementary base pairs in RNA

Question

Write the complementary RNA base pairs and show their hydrogen bonds with structures.

Adenine pairs with uracil through two hydrogen bonds; guanine pairs with cytosine through three.

Part of VKC Basic

Read the key points and the full model answer with VKC Basic

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The full model answer

As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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CoversRNA base pairingA–U and G–C hydrogen bondsWatson–Crick pairsuracilnucleobases