JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 August 2021, Shift 1, Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30, Section A.

Which one of the following methods is most suitable for preparing deionized water ?

(1)Clark's method
(2)Synthetic resin methodOfficial answer
(3)Calgon's method
(4)Permutit method

Official answer

Option 2

NTA final key.

Chapter: Hydrogen
Topic: Hydrogen and Hydrides
Idea tested: Ion-Exchange Resins for Water Softening

Same idea in other shifts

Asked 3× in all

13 Apr 2023, Shift 1 · Q66Given below are two statements : Statement I: Permutit process is more efficient compared to the synthetic resin method for the softening…MediumTwo statements
17 Mar 2021, Shift 2 · Q36The functional groups that are responsible for the ion-exchange property of cation and anion exchange resins, respectively, are :EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.