Question
Download Solution PDFThe chemical formula of gypsum is ______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is CaSO4.2H2O.
Key Points
- The chemical formula of gypsum is CaSO4.2H2O.
- A soft sulphate mineral called gypsum is made up of calcium sulphate dihydrate.
- It is widely mined, used as fertiliser, and the primary component of numerous plaster, sidewalk or blackboard chalk, and plasterboard products.
- Several cultures, including Ancient Egypt, Mesopotamia, Rome, the Byzantine Empire, and the Nottingham alabasters of Medieval England, have employed alabaster, a fine-grained, white or subtly coloured type of gypsum, for sculpture.
- Gypsum can also form selenite crystals, which are transparent.
Additional Information
- Gypsum
- The Greek word "o" (gypsos), which means "plaster," is where the name "gypsum" comes from.
- Gypsum which has been dehydrated and used for various purposes for a long time has acquired the name plaster of Paris thanks to the quarries in the Parisian neighbourhood of Montmartre.
- Plaster of Paris hardens or "sets" in ways that are beneficial for casting and construction after adding water and after a few dozen minutes returns to being ordinary gypsum (dihydrate).
Last updated on Jul 22, 2025
-> The IB Security Assistant Executive Notification 2025 has been released on 22nd July 2025 on the official website.
-> The SSC CGL Notification 2025 has been announced for 14,582 vacancies of various Group B and C posts across central government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025 in multiple shifts.
-> In the SSC CGL 2025 Notification, vacancies for two new posts, namely, "Section Head" and "Office Superintendent" have been announced.
-> Candidates can refer to the CGL Syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline, with the age limit varying from post to post.
-> The SSC CGL Salary structure varies by post, with entry-level posts starting at Pay Level-4 (Rs. 25,500 to 81,100/-) and going up to Pay Level-7 (Rs. 44,900 to 1,42,400/-).
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.