JEE Main 2022 — s Block Elements Question with Solution
JEE Main 2022 (29 Jul Shift 2)
Question
Choose an option
Show full solutionCorrect option: B
Step-by-step explanation
Cement is an important building material. It was first introduced in England in 1824 by Joseph Aspdin. It is also called Portland cement because it resembles with the natural limestone quarried in the Isle of Portland, England.
The raw materials for the manufacture of cement are limestone and clay.
When mixed with water, the setting of cement takes place to give a hard mass. This is due to the hydration of the molecules of the constituents and their rearrangement. The purpose of adding gypsum is only to slow down the process of setting of the cement so that it gets sufficiently hardened.
Hence,Gypsum is used to enhance setting time in portland cement.
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This is a previous-year question from JEE Main 2022, covering the s Block Elements chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.