JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 9 April 2024, Shift 2, Chemistry Q84

Question 84 of 90 in this shift, Chemistry question 24 of 30, Section B.

The vapor pressure of pure benzene and methyl benzene at

27^\circ

C is given as 80 Torr and 24 Torr, respectively. The mole fraction of methyl benzene in vapor phase, in equilibrium with an equimolar mixture of those two liquids (ideal solution) at the same temperature is ________

\times 10^{-2}

(nearest integer)

Official answer

NTA final key.

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Relative Lowering of VP

Same idea in other shifts

Asked 12× in all

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7 Apr 2025, Shift 2 · Q55Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm Hg respectively at the same…MediumSingle correct
6 Apr 2023, Shift 1 · Q85Mass of Urea ( $\mathrm{NH_2CONH_2}$ ) required to be dissolved in 1000 g of water in order to reduce the vapour pressure of water by 25% is…MediumNumerical value
11 Apr 2023, Shift 2 · Q62What weight of glucose must be dissolved in 100 g of water to lower the vapour pressure by 0.20 mm Hg ? (Assume dilute solution is being…MediumSingle correct
15 Apr 2023, Shift 1 · Q83The vapour pressure of 30% (w/v) aqueous solution of glucose is __________ mm Hg at $25^\circ\mathrm{C}$ . [Given : The density of 30%…MediumNumerical value
28 Jun 2022, Shift 1 · Q85The vapour pressures of two volatile liquids A and B at 25°C are 50 Torr and 100 Torr, respectively. If the liquid mixture contains 0.3…MediumNumerical value
26 Feb 2021, Shift 1 · Q54224 mL of $\mathrm{SO_{2(g)}}$ at 298 K and 1 atm is passed through 100 mL of 0.1 M NaOH solution. The non-volatile solute produced is…HardNumerical value

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 108 of the 174 JEE Main shifts held from 2017 to 2026.