JEE Main 2016ChemistryHydrocarbonsMediumMCQ

JEE Main 2016 — Hydrocarbons Question with Solution

JEE Main 2016 (09 Apr Online)

Question

5 L of an alkane requires 25 L of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is

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Show full solutionCorrect option: D
Correct answer
DPropane

Step-by-step explanation

Combustion of Hydrocarbon,

CxHy+x+y4O2→x CO2+y2H2O

∴ n∝v (P,T=Constant)

for 1 mole of CxHy=x+y4, O2 required

for 5 L of CxHy=x+y4 5 L, O2 required

∴ ratio of alkane and O2 is 5/25

So, x+y45=25

    x+y4=5,

which is satisfied by C3H8.
 

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About this question

This is a previous-year question from JEE Main 2016, 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.