JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 28 July 2022, Shift 1, Chemistry Q67

Question 67 of 90 in this shift, Chemistry question 7 of 30, Section A.

The metal salts formed during softening of hardwater using Clark's method are :

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

Official answer

Option 2

NTA final key (2022 Session 2).

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

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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 42 of the 174 JEE Main shifts held from 2017 to 2026.