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JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 1 February 2024, Shift 2, Chemistry Q83

Question 83 of 90 in this shift, Chemistry question 23 of 30, Section B.

Mass of ethylene glycol (antifreeze) to be added to 18.6 kg of water to protect the freezing point at

-24^\circ\mathrm{C}

is ________ kg (Molar mass in g mol

^{-1}

for ethylene glycol 62,

\mathrm{K_f}

of water = 1.86 K kg mol

^{-1}

)

Official answer

15

NTA final key.

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Antifreeze Mass Calculations

Same idea in other shifts

Asked 2× in all

3 Aug 2021, Shift 1 · Q54The amount of ethyl alcohol ( $\mathrm{C_2H_5OH}$ ) that should be added to 1kg of water so that the solution does not freeze at –4ºF…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.