Q41.What is the purpose of adding gypsum to cement? (1) To facilitate the hydration of cement (2) To slow down the process of setting (3) To give a hard mass (4) To speed up the process of setting
What This Question Tests
This question is a direct factual recall about the industrial application of gypsum in cement, specifically its role in controlling the setting process.
Concepts Tested
📚 NCERT Sections This Tests
4.12 — What Are Interstitial Compounds? Why Are Such Compounds Well Known For
Chemistry Class 11 · Chapter 4
4.12 What are interstitial compounds? Why are such compounds well known for transition metals?
8.18 — Give Plausible Explanation For Each Of The Following:
Chemistry Class 12 · Chapter 8
8.18 Give plausible explanation for each of the following: (i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclo- hexanone does not. (ii) There are two –NH2 groups in semicarbazide. However, only one is involved in the formation of semicarbazones. (iii) During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed.
8.17 — Complete Each Synthesis By Giving Missing Starting Material, Reagent Or Products
Chemistry Class 12 · Chapter 8
8.17 Complete each synthesis by giving missing starting material, reagent or products
📋 Question Details
- Chapter
- s-block Elements
- Topic
- Cement chemistry
- Year
- 2023
- Shift
- 08 Apr Shift 1
- Q Number
- Q41
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 11: p-block Elements (as part of industrial chemistry knowledge from s/p-block in NCERT)
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