1) What is limestone? a) chocolate brownies b) calcium carbonate c) calcium hydroxide d) calcium 2) What does limestone mixed with powdered clay produce? a) concrete b) glass c) cement d) quicklime 3) Why is limestone used in building? a) it is strong b) easy to shape and cut c) weathers well d) there is lots of it 4) calcium carbonate composes of what natural crystaline mineral? a) calcite b) sodium c) wolframite d) anorthite 5) what forms calcium carbonate? a) dead plants b) dead sea aninmals c) dead sea plants and animals d) dead plants and animals 6) what reaction forms quicklime(calcium oxide)? a) combustion b) reduction c) oxidisation d) thermal decomposition 7) when calium oxide reacts with water what does it form? a) ca(oh)₂ b) Ca(OH)₂ c) Ca(HO)₂ d) Ca(Ho) 8) What is lime water used to test for? a) CO₂ b) O c) Ca d) CO

Limestone Quiz-India, kerry shannan

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