JEE Main 2012 — Hydrogen Question with Solution
From: AIEEE 2012
Question
Very pure hydrogen (99.9%) can be made by which of the following processes?
Choose an option
Show full solutionCorrect option: D
Correct answer
DReaction of salt like hydrides with water
Step-by-step explanation
Very pure hydrogen (99.9%) can be prepared by the action of water on any hydrides i.e, sodium hydride(NaH), Calcium Hydride(CaH2) etc.
(very pure Hydrogen)
By electrolysis of water we get 99.5% pure hydrogen.
2H2O 2H2 + O2
Note :
By electrolysis of water we can't get 99.9% pure hydrogen we only get around 99.5% pure hydrogen. That is why option (C) is wrong.
(very pure Hydrogen)
By electrolysis of water we get 99.5% pure hydrogen.
2H2O 2H2 + O2
Note :
By electrolysis of water we can't get 99.9% pure hydrogen we only get around 99.5% pure hydrogen. That is why option (C) is wrong.
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This is a previous-year question from JEE Main 2012, 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.