class 8 NCERT chapter 5 please answer me
1. Give the characteristics of coal tar?
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Answer:
Coal tar is black in color. It's a semi-solid and semi-liquid in nature and is less permeable. Its density is very thick and It has a peculiar smell. Tar is insoluble in nature which means that it can't dissolve in water.
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Explanation:
Coal tar: It is obtained as a byproduct in the process of making coke. Though its color is the same as coke, tar is a highly viscous liquid. It also has an extremely unpleasant smell. Uses: Coal tar is widely used to manufacture paints, perfumes, synthetic dyes, photographic material, drugs and explosives.
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