JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 5 April 2026, Shift 2, Chemistry Q51

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

What volume of hydrogen gas at STP would be liberated by action of 50 mL of

\mathrm{H_2SO_4}

of 50% purity (density = 1.3 g mL

^{-1}

) on 20 g of zinc ? Given : Molar mass of H, O, S, Zn are 1, 16, 32, 65 g mol

^{-1}

respectively.

(1) $5.824$ L
(2) $7.428$ L
(3) $6.892$ LOfficial answer
(4) $8.375$ L

Official answer

Option 3

NTA final key.

Chapter: Some Basic Concepts of Chemistry
Topic: Stoichiometry
Idea tested: Limiting Reagent Identification

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Asked 5× 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.