Describe the importance of the following: (i) limestone (ii) cement (iii) plaster of paris.
Answers
(i) Importance of Limestone (CaCO3)
⇒ Specially precipitated, CaCO3 is extensively used in the manufacture of high quality paper.
⇒ It is also used in as an antacid, mild abrasive in toothpaste.
⇒ It is a constituent of chewing gum as a filler in cosmetics.
(ii) Importance of cement
⇒ Cement is an important building material.
⇒ It is used in concrete and in plastering.
⇒ It is used in the construction of bridges, dams and buildings.
(iii) Importance of Plaster of Paris
⇒ Plaster of Paris is extensively used in the building industry as well as plasters.
⇒ It is used in dentistry, in ornamental work and for taking the casts of statues and busts.
⇒ It is also used for immobilising (prevent from moving) the affected part of organ where there is bone fraction or sprain.
Limestone has numerous uses: as a building material, an essential component of concrete (Portland cement), as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a chemical feedstock for the production of lime, as a soil conditioner, and as a popular decorative
Cement
Because it is a major component of both of these building materials, cement is an extremely important construction material. It is used in the production of the many structures that make up the modern world including buildings, bridges, harbours, runways and roads.
Plaster of Paris
Plaster of Paris (POP) is a building material having Gypsum as its main component. It is used for coating walls and ceilings and also for creating architectural designs. Plaster of Paris is manufactured as a dry powder and is mixed with water to form a paste when used.
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