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Correct Answer: Option C — Limestone. Limestone is correct because it is reacts with dilute acid. Limestone is also associated with a major raw material for cement. 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 splits into thin layers called fissility and is associated with can metamorphose into slate; those are the identifying facts of Shale. Option B — Marble: It is has interlocking calcite crystals and is associated with used in sculpture and architecture; those are the identifying facts of Marble. Option D — Slate: It is splits into smooth thin sheets and is associated with used for roofing and writing boards; those are the identifying facts of Slate. Exam Takeaway: Link Limestone with “reacts with dilute acid” and “a major raw material for cement” for quick revision.
