JEE Main 2020 — Hydrogen Question with Solution
From: JEE Main 2020 (Online) 5th September Evening Slot
Question
The one that is NOT suitable for the removal of permanent hardness of water is :
Choose an option
Show full solutionCorrect option: D
Correct answer
DClark's method
Step-by-step explanation
For Removal of Temporary hardness two methods are present
(1) Clark’s method
(2) Boiling
While permanent hardness of water can be removed 4 methods
(1) Washong soda method (Na2CO3 method),
(2) Calgon method
(3) Permutit Process
(4) Ion-exchange Resin method.
(1) Clark’s method
(2) Boiling
While permanent hardness of water can be removed 4 methods
(1) Washong soda method (Na2CO3 method),
(2) Calgon method
(3) Permutit Process
(4) Ion-exchange Resin method.
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This is a previous-year question from JEE Main 2020, 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.