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Friday, 9 October

JEE Main 2025 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 2 April 2025, Shift 1, Chemistry Q75

Question 75 of 75 in this shift, Chemistry question 25 of 25, Section B.

0.1 mol of the following given antiviral compound (P) will weigh ___________ ×10−1\times10^{-1} g (nearest integer). (Given : molar mass in g mol−1\mathrm{g\ mol^{-1}} H : 1, C : 12, N : 14, O : 16, F : 19, I : 127)

The figure, in words

Structure (P): a pyrimidine-2,4-dione (uracil) ring bearing iodine at C-5, N-1 attached to a five-membered furanose ring (ring O) that carries a fluorine (wedge bond) at the 2' position, an OH (hashed bond) at the 3' position and a CH2OH group at the 4' position (drawn HO-CH2 ... HO).

Official answer

372

NTA final key.

Chapter
Biomolecules
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.