JEE Main 2019 — Hydrogen Question with Solution
From: JEE Main 2019 (Online) 12th April Morning Slot
Question
The metal that gives hydrogen gas upon treatment with both acid as well as base is :
Choose an option
Show full solutionCorrect option: B
Correct answer
Bzinc
Step-by-step explanation
Zn + 2HCl ZnCl2 + H2
Zn + NaOH Na2ZnO2 + H2
Here zinc(Zn) is amphoteric metal, that is why it reacts with both acid and base.
Zn + NaOH Na2ZnO2 + H2
Here zinc(Zn) is amphoteric metal, that is why it reacts with both acid and base.
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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.