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JEE Main 2024 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 1 February 2024, Shift 2, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

10 mL of gaseous hydrocarbon on combustion gives 40 mL of

\mathrm{CO_2(g)}

and 50 mL of water vapour. Total number of carbon and hydrogen atoms in the hydrocarbon is ________.

Official answer

14

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Stoichiometry
Idea tested: Eudiometry and Gas Mixture Analysis

Same idea in other shifts

Asked 2× in all

24 Feb 2021, Shift 2 · Q51The formula of a gaseous hydrocarbon which requires 6 times of its own volume of $\mathrm{O_2}$ for complete oxidation and produces 4…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.