Which Major Islands and Minerals of the World term is correctly associated with location or primary association: “a hydrated calcium sulphate mineral”, and also with “used in plaster and cement manufacture”?

Correct Answer: Option A — Gypsum. Gypsum is correct because it is a hydrated calcium sulphate mineral. Gypsum is also associated with used in plaster and cement manufacture. A further identifying fact is that Gypsum is a hydrated calcium sulphate mineral. Another useful fact is that Gypsum is associated with used in plaster and cement manufacture. Why the other options are incorrect: Option B — Mica: It is a sheet silicate mineral group and is associated with valued as an electrical and thermal insulator; those are the identifying facts of Mica. Option C — Greenland: It is located between the Arctic and North Atlantic oceans and is associated with the world's largest island that is not a continent; those are the identifying facts of Greenland. Option D — New Guinea: It is located north of Australia in the western Pacific and is associated with politically divided between Indonesia and Papua New Guinea; those are the identifying facts of New Guinea. Exam Takeaway: Link Gypsum with “a hydrated calcium sulphate mineral” and “used in plaster and cement manufacture” for quick revision.