JEE Main 2019 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2019 (Online) 12th April Evening Slot
Question
25 g of an unknown hydrocarbon upon burning produces 88 g of CO2 and 9 g of H2O. This unknown
hydrocarbon contains :
Choose an option
Show full solutionCorrect option: D
Correct answer
D24 g of carbon and 1 g of hydrogen
Step-by-step explanation
CxHy + O2 xCO2 + H2O
No of moles of CO2 produced = = 2 mol
No of moles of H2O produced = = 0.5 mol
According to stoichiometric mole mole analysis :
So,
No of moles of CO2 produced = = 2 mol
No of moles of H2O produced = = 0.5 mol
According to stoichiometric mole mole analysis :
So,
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This is a previous-year question from JEE Main 2019, 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.