JEE Main 2025 · ChemistryMultiple choiceSingle correctEasyCalculation

JEE Main 3 April 2025, Shift 2, Chemistry Q51

Question 51 of 75 in this shift, Chemistry question 1 of 25, Section A.

Mass of magnesium required to produce 220 mL of hydrogen gas at STP on reaction with excess of dil. HCl is Given: Molar mass of Mg is

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

(1)0.24 mg
(2)236 mgOfficial answer
(3)235.7 g
(4)2.444 g

Official answer

Option 2

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Stoichiometry
Idea tested: Mass-Volume Stoichiometry at STP

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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.