What is limestone?

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Study for the IBDP Business Management Test. Engage in quizzes with flashcards and multiple choice questions. Each question offers insights and explanations. Prepare thoroughly for your exam!

Multiple Choice

What is limestone?

Explanation:
Limestone is a natural rock made mainly of calcium carbonate. It forms in oceans from the accumulation of shells, coral, and skeletal fragments over long periods. In industry, limestone is prized as a raw material for cement. In cement production, quarried limestone is crushed and heated in a kiln, where calcium carbonate decomposes to form calcium oxide and carbon dioxide. The calcium oxide then reacts with other materials to form cement clinker, which is ground into cement. That’s why limestone is described as a natural rock used to produce cement. It isn’t a metal ore, a type of clay, or a synthetic polymer, which is why the other options don’t fit.

Limestone is a natural rock made mainly of calcium carbonate. It forms in oceans from the accumulation of shells, coral, and skeletal fragments over long periods. In industry, limestone is prized as a raw material for cement. In cement production, quarried limestone is crushed and heated in a kiln, where calcium carbonate decomposes to form calcium oxide and carbon dioxide. The calcium oxide then reacts with other materials to form cement clinker, which is ground into cement. That’s why limestone is described as a natural rock used to produce cement.

It isn’t a metal ore, a type of clay, or a synthetic polymer, which is why the other options don’t fit.

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