Describe the importance of the following: (a) limestone, (b) cement and ( c) plaster of Paris.

Explanation

(i) Limestone . Specially precipitated `CaCO_(3)` is extensively used in the manufacture of high quality paper . It is also used as an antacid , mild abrasive in toothpaste , a 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 bridges , dams and buildings .
(iii) Plaster of Paris . It is extensively used in the building industry as well as in plasters . It is used in dentistry , in ornamental work and for making casts of statues and busts . It is also used in surgical bandages known as plasters of immoblising the affected part of organ where there is bone fracture or sprain.