JEE Main 2019 — Hydrogen Question with Solution
From: JEE Main 2019 (Online) 8th April Evening Slot
Question
The strength of 11.2 volume solution of H2O2
is : [Given that molar mass of H = 1 g mol–1
and O = 16 g mol–1]
Choose an option
Show full solutionCorrect option: A
Correct answer
A3.4%
Step-by-step explanation
Strength means %.
Molarity of H2O2 = = = 1 M = 34 gm/lit
In 1000 ml solution 34 gm H2O2 present
In 100 ml solution 3.4 gm H2O2 present.
Molarity of H2O2 = = = 1 M = 34 gm/lit
In 1000 ml solution 34 gm H2O2 present
In 100 ml solution 3.4 gm H2O2 present.
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This is a previous-year question from JEE Main 2019, covering the Hydrogen 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.