JEE Main 2020ChemistrySome Basic Concepts of ChemistryEasyNumerical

JEE Main 2020 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2020 (03 Sep Shift 1)

Question

The mole fraction of glucose C6H12O6 in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is ………

Enter your answer

Show full solutionCorrect answer: 47
Correct answer
47

Step-by-step explanation

Let total mole of solution =1

so mole of glucose =0.1

mole of H2O=0.9

% w/w of H2O=0.9×180.9×18+0.1×180×100

=47.368

=47.37

Practice this on the real CBT interface

Solve this JEE Main question (and the rest of the Some Basic Concepts of Chemistry chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.

Solve interactively →

About this question

This is a previous-year question from JEE Main 2020, covering the Some Basic Concepts of Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.