JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 26 June 2022, Shift 2, Chemistry Q90

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

The moles of methane required to produce 81 g of water after complete combustion is ________

\times\,10^{-2}

mol. [nearest integer]

Official answer

225

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Limiting Reagent and Reaction Yield

Same idea in other shifts

Asked 6× in all

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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.