Chemistry · 2026
JEE Main · 5 April 2026, Shift 1 · Q54
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…
What is the mole fraction of water in $\displaystyle 10 \%$ by weight $\displaystyle (\mathrm{w} / \mathrm{w})$ of aqueous urea solution?
[Given: Molar mass of H, O, C and N are $\displaystyle 1$, $\displaystyle 16$, $\displaystyle 12$ and $\displaystyle 14 \mathrm{~g} \mathrm{~mol}^{-1}$ respectively.]
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle 0.967$
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JEE Main 2026 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.