JEE Main 2023ChemistrySome Basic Concepts of ChemistryMediumNumerical

JEE Main 2023 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2023 (08 Apr Shift 1)

Question

0.5 g of an organic compound (X) with 60% carbon will produce ×10-1 g of CO2 on complete combustion.

Enter your answer

Show full solutionCorrect answer: 11
Correct answer
11

Step-by-step explanation

To calculate the mass percent of an element in a compound, we divide the mass of the element in 1 mole of the compound by the compound's molar mass and multiply the result by 100.

The combustion reaction is Cs+O2g→CO2g

C%=1244× Wt. of CO2 Wt. of organic compound ×100

60=1244× Wt. of CO20.5×100

Wt. of CO2=1.1

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 2023, 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.