JEE Main 2026 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 5 April 2026, Shift 1, Chemistry Q54

Question 54 of 75 in this shift, Chemistry question 4 of 25, Section A.

What is the mole fraction of water in 10% by weight (w/w) of aqueous urea solution? [Given: Molar mass of H, O, C and N are 1, 16, 12 and 14 g mol

^{-1}

respectively.]

(1)0.825
(2)0.032
(3)0.867
(4)0.967Official answer

Official answer

Option 4

NTA final key.

Chapter: Solutions
Topic: Mole Concept
Idea tested: Mole Fraction Calculation

Same idea in other shifts

Asked 3× in all

8 Apr 2026, Shift 2 · Q52Given below are two statements : Given : Molar mass of C, H, O, Cl are 12, 1, 16 and 35.5 g mol $^{-1}$ , respectively Statement I : In 30%…MediumTwo statements
30 Jan 2024, Shift 2 · Q61If a substance 'A' dissolves in solution of a mixture of 'B' and 'C' with their respective number of moles as $\mathrm{n_A}$ ,…EasySingle correct

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. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.