Answer:
(i) Limestone: It is used as a
building material and in the manufacture of cement and quick lime. Specially
precipitated \[CaC{{O}_{3}}\] is extensively used in the manufacture of high
quality paper. It is used as antacid, mild abrasive in toothpaste, as
constituent of chewing gum and as a filler in cosmetics.
(ii) Cement:
It is an important building material. It is used in concrete and reinforced
concrete, in plastering and in the construction of every type of structures
such as bridges, dams and buildings.
(iii) Plaster of
Paris: The largest use of plaster of Paris is in the building industry as
well as in plasters. It is used for immobilising the affected part of an organ
when there is a bone fracture or sprain. It is also employed in dentistry, in ornamental
work and for making casts of statues and busts.
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