Question

how is lime stone formed ? write its uses

Answer 1

heyaa,,,
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Limestone is a sedimentary rock composed largely of the mineral calcite (calcium carbonate: CaCO3). It often has variable amounts of silica in it, as well as varying amounts of clay, silt, and sand. Limestone rocks fall under the category of sedimentary rocks that are made from mineral calcite.
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Answer 2

1)It most commonly forms in clear, warm, shallow marine waters. It is usually an organic sedimentary rock that forms from the accumulation of shell, coral, algal, and fecal debris.
2) It can also be a chemical sedimentary rock formed by the precipitation of calcium carbonate from lake or ocean water.
Uses of limestone
1)it is used as a raw material in cement industry
2)pulverised limestone is used as soil conditioner to make acidic soil alkaline in nature for growing crops .
3)it is also used in manufacturing glass
Hope it helps you .