JEE Main 2021 — Some Basic Concepts Of Chemistry Question with Solution
From: JEE Main 2021 (Online) 16th March Morning Shift
Question
Complete combustion of 750 g of an organic compound provides 420 g of CO2 and 210 g of H2O. The percentage composition of carbon and hydrogen in organic compound is 15.3 and ___________ respectively. (Round off to the Nearest Integer).
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Show full solutionCorrect answer: 3.11
Correct answer
3.11
Step-by-step explanation
18 gm H2O 2 gm H2
210 gm
= 23.33 gm H2
So, % H2 = = 3.11% 3%
210 gm
= 23.33 gm H2
So, % H2 = = 3.11% 3%
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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.