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JEE Main 30 July 2022, Shift 2, Chemistry Q53

Question 53 of 90 in this shift, Chemistry question 23 of 30, Section B.

31 g of ethylene glycol is mixed with 500 g of water. The freezing point of the aqueous solution is ________ K. (in nearest integer) (

\mathrm{K_f}

of water = 1.86 K kg

\mathrm{mol^{-1}}

) [Molar mass of C, H, O are 12, 1, 16 g

\mathrm{mol^{-1}}

]

Official answer

271

NTA final key.

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Freezing Point Depression

Same idea in other shifts

Asked 16× in all

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3 Aug 2021, Shift 2 · Q32The lowest freezing point among the following solutions will be observed in [Atomic weight : C = 12, Mg = 24, Na = 23, Cl = 35.5, O = 16,…EasySingle correct
26 Aug 2021, Shift 2 · Q5483 g of ethylene glycol dissolved in 625 g of water. The freezing point of the solution is __________ K. (Nearest integer) [Use : Molal…MediumNumerical 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.