JEE Main 2020 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 3 September 2020, Shift 2, Chemistry Q47

Question 47 of 75 in this shift, Chemistry question 22 of 25.

If 250

\mathrm{cm^3}

of an aqueous solution containing 0.73 g of a protein A is isotonic with one litre of another aqueous solution containing 1.65 g of a protein B, at 298 K, the ratio of the molecular masses of A and B is __________

\times10^{-2}

(to the nearest integer).

Official answer

177.00

NTA final key (Sep 2020).

Chapter: Solutions
Topic: Colligative Properties
Idea tested: Isotonic Solutions

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Asked 4× in all

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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.