‘Coal tar’ is widely used in road constructions, building constructions, and as an important raw material in many
industrial products.
a) Write its actual use in road and building constructions.
b) Write the names of any four industrial products made from coal tar.
Answers
Answer:
Coal tar is mostly used for road works. Wood tar: It is obtained by distillation of pine wood and other resinous wood. It has a strong preservative property for wood as it consists of creosote oil. It acts as an excellent anti-termite coat when it is applied to wooden poles buried underground.
Answer:
a) Coal tar is mostly used for road works. Wood tar: It is obtained by distillation of pine wood and other resinous wood. It has a strong preservative property for wood as it consists of creosote oil. It acts as an excellent anti-termite coat when it is applied to wooden poles buried underground
b) Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives. It can be utilized to make insecticides and pesticides. Coal tar is an ingredient of anti-dandruff and lice-repelling shampoos, soaps and ointments.