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JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 29 July 2022, Shift 2, Chemistry Q68

Question 68 of 90 in this shift, Chemistry question 8 of 30, Section A.

Portland cement contains ‘X’ to enhance the setting time. What is ‘X’?

(1) $\mathrm{CaSO_4 \cdot \frac{1}{2}H_2O}$
(2) $\mathrm{CaSO_4 \cdot 2H_2O}$ Official answer
(3) $\mathrm{CaSO_4}$
(4) $\mathrm{CaCO_3}$

Official answer

Option 2

NTA final key.

Chapter: The p-Block Elements
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy

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.