JEE Main 2021ChemistrySome Basic Concepts of ChemistryMediumNumerical

JEE Main 2021 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2021 (22 Jul Shift 1)

Question

Methylation of 10 g of benzene gave 9.2 g of toluene. Calculate the percentage yield of toluene (Nearest integer)

Enter your answer

Show full solutionCorrect answer: 78
Correct answer
78

Step-by-step explanation


C6H6+CH3Cl⟶C6H5CH3+HCl   10 gm                       1078×92gm
Percentage yield of toluene = Actual yieldTheoretical yield×100

=9.2920×78×100=78%

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 2021, 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.