JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 6 April 2023, Shift 1, Chemistry Q68

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

The setting time of Cement is increased by adding

(1)Limestone
(2)Clay
(3)GypsumOfficial answer
(4)Silica

Official answer

Option 3

NTA final key.

Chapter: The s-Block Elements
Topic: s-Block Elements
Idea tested: Role of Gypsum in Portland Cement

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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.