JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 27 June 2022, Shift 1, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

Two elements A and B which form 0.15 moles of

\mathrm{A_2B}

and

\mathrm{AB_3}

type compounds. If both

\mathrm{A_2B}

and

\mathrm{AB_3}

weigh equally, then the atomic weight of A is __________ times of atomic weight of B.

Official answer

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Mole Concept
Idea tested: Molar Mass and Gas Volume

Same idea in other shifts

Asked 5× in all

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2 Apr 2017 (offline) · Q321 gram of a carbonate ( $\mathrm{M_2CO_3}$ ) on treatment with excess HCl produces 0.01186 mole of $\mathrm{CO_2}$ . The molar mass of…EasySingle correct

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.