JEE Main 2020ChemistryHydrocarbonsEasyNumerical

JEE Main 2020 — Hydrocarbons Question with Solution

JEE Main 2020 (05 Sep Shift 1)

Question

The minimum number of moles of O2 required for complete combustion of 1 mole of propane and 2 moles of butane is..............

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Show full solutionCorrect answer: 18
Correct answer
18

Step-by-step explanation

(1) Combustion of propane.

C3H8 + 5O2g→3CO2g+4H2O1 mole     5 mole

(2) Combustion of butane

C4H10+132O2→4CO2g+5H2O1 mole     132 mole

so total mole of O2 =5+13=18

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About this question

This is a previous-year question from JEE Main 2020, covering the Hydrocarbons 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.