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What is coal tar? What are its uses?...

What is coal tar? What are its uses?

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Coal tar is a thick black liquid formed during destructive distillation of coal. It is a mixture of about 200 substances which are mainly aromatic hydrocarbons.
Uses : (i) It is used as a source of hydrocarbons.
(ii) It is used to get naphthalene and many other useful products. Naphthalene is used as a moth and insect repellent.
(iii) It is used in making road surfaces.
(iv) It is used to manufacture synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, etc.
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Knowledge Check

  • Coal tar is a

    A
    black,thick liquid
    B
    dark,oily liquid
    C
    tough,porous and black substance
    D
    gas

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