Which Rocks term is correctly associated with common use or association: “a major raw material for cement”, and also with “a sedimentary carbonate rock”?

Correct Answer: Option D — Limestone. Limestone is correct because it is a major raw material for cement. Limestone is also associated with a sedimentary carbonate rock. A further identifying fact is that Limestone is reacts with dilute acid. Another useful fact is that Limestone is associated with a major raw material for cement. Why the other options are incorrect: Option A — Shale: It is can metamorphose into slate and is associated with a fine-grained sedimentary rock; those are the identifying facts of Shale. Option B — Marble: It is used in sculpture and architecture and is associated with a metamorphic rock; those are the identifying facts of Marble. Option C — Slate: It is used for roofing and writing boards and is associated with a low-grade metamorphic rock; those are the identifying facts of Slate. Exam Takeaway: Link Limestone with “a major raw material for cement” and “a sedimentary carbonate rock” for quick revision.