Learn

Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 8 April 2023, Shift 1, Chemistry Q67

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

What is the purpose of adding gypsum to cement?
  1. (1)To give a hard mass
  2. (2)To facilitate the hydration of cement
  3. (3)To slow down the process of settingOfficial answer
  4. (4)To speed up the process of setting

Official answer

Option 3

NTA final key.

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

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2023, Shift 1 · Q68The setting time of Cement is increased by addingEasySingle 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.