JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 13 April 2023, Shift 2, Chemistry Q81

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

1g of a carbonate (

\mathrm{M_2CO_3}

) on treatment with excess HCl produces 0.01 mol of

\mathrm{CO_2}

. The molar mass of

\mathrm{M_2CO_3}

is ______

\mathrm{g\,mol^{-1}}

. (Nearest integer)

Official answer

100

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Stoichiometry
Idea tested: Mole-to-Mole Relationships

Same idea in other shifts

Asked 3× 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 42 of the 174 JEE Main shifts held from 2017 to 2026.