JEE Main 2026 — Some Basic Concepts of Chemistry Question with Solution
JEE Main 2026 (21 January Shift 2)
Question
Aqueous HCl reacts with to form and . What is the weight (in g) of liberated when 8.7 g of is reacted with excess aqueous HCl solution?
(Given Molar mass in )
(Given Molar mass in )
Choose an option
Show full solutionCorrect option: D
Correct answer
D7.1
Step-by-step explanation
The balanced redox equation is: .
Molar mass of MnO₂ = 55 + 32 = 87 g/mol.
Moles of MnO₂ = mol.
From stoichiometry, 1 mol MnO₂ produces 1 mol Cl₂, so 0.1 mol produces 0.1 mol Cl₂.
Mass of Cl₂ = g.
Molar mass of MnO₂ = 55 + 32 = 87 g/mol.
Moles of MnO₂ = mol.
From stoichiometry, 1 mol MnO₂ produces 1 mol Cl₂, so 0.1 mol produces 0.1 mol Cl₂.
Mass of Cl₂ = g.
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This is a previous-year question from JEE Main 2026, covering the Some Basic Concepts of Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.