JEE Main 2021ChemistrySome Basic Concepts of ChemistryMediumNumerical

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

JEE Main 2021 (25 Jul Shift 1)

Question

Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ______ ×10-1 g. (in nearest integer)

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Show full solutionCorrect answer: 464
Correct answer
464

Step-by-step explanation

C4H10+132O2⟶4CO2+5H2O

Moles of H2O=7218=4

Moles of C4H10 used =15×4

Weight of C4H10 used =45×58

=46.4 gm

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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.