Which Rocks term is correctly associated with common use or association: “commonly used as a building stone”, and also with “a clastic sedimentary rock”?

Correct Answer: Option D — Sandstone. Sandstone is correct because it is commonly used as a building stone. Sandstone is also associated with a clastic sedimentary rock. A further identifying fact is that Sandstone is often shows bedding layers. Another useful fact is that Sandstone is associated with commonly used as a building stone. Why the other options are incorrect: Option A — Limestone: It is a major raw material for cement and is associated with a sedimentary carbonate rock; those are the identifying facts of Limestone. Option B — Shale: It is can metamorphose into slate and is associated with a fine-grained sedimentary rock; those are the identifying facts of Shale. Option C — Marble: It is used in sculpture and architecture and is associated with a metamorphic rock; those are the identifying facts of Marble. Exam Takeaway: Link Sandstone with “commonly used as a building stone” and “a clastic sedimentary rock” for quick revision.