what is coal tar? write its uses.
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This medication is used on the skin to treat the itching, scaling, and flaking due to skin conditions such as psoriasis or seborrheic dermatitis. Coal tar belongs to a class of drugs known as keratoplastics. It works by causing the skin to shed dead cells from its top layer and slow down the growth of skin cells.
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Coaltar is a black thick liquid. It is a mixture of 200 substances. Its uses are:
i) It is used as a source of various useful substances
ii) It is used to get naphthalene which is used to repel moths and other insects
iii) It is used to make surfaces of roads
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