JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 28 July 2022, Shift 2, Chemistry Q34

Question 34 of 90 in this shift, Chemistry question 4 of 30, Section A.

The products obtained during treatment of hard water using Clark's method are :

(1) $\mathrm{CaCO_3}$ and $\mathrm{MgCO_3}$
(2) $\mathrm{Ca(OH)_2}$ and $\mathrm{Mg(OH)_2}$
(3) $\mathrm{CaCO_3}$ and $\mathrm{Mg(OH)_2}$ Official answer
(4) $\mathrm{Ca(OH)_2}$ and $\mathrm{MgCO_3}$

Official answer

Option 3

NTA final key.

Chapter: Hydrogen
Topic: Hydrogen and Hydrides
Idea tested: Temporary Hardness and Clark's Method

Same idea in other shifts

Asked 3× in all

26 Jun 2022, Shift 2 · Q65Boiling of hard water is helpful in removing the temporary hardness by converting calcium hydrogen carbonate and magnesium hydrogen…EasySingle correct
18 Mar 2021, Shift 1 · Q36Given below are two Statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : During the boiling…MediumAssertion–reason

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.