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प्रश्न
Name the products obtained and their uses when coal is processed in industry.
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उत्तर
When coal is strongly heated in the absence of air in closed retorts, various useful products are obtained. These are coke, coal tar and coal gas. Uses of coke It is used in the manufacture of steel and in the extraction of many metals. It acts as a fuel and it is a better fuel than coal. Uses of coal tar The various compounds obtained from coal tar are used as starting materials for manufacturing a large number of substances used in everyday life and in industry like synthetic dyes, drugs, explosives, perfumes, plastics, paints, photographic materials, roofing materials, etc. Naphthalene balls used to repel moths and other insects are also obtained from coal tar. Uses of coal gas It is used as a fuel in many industries situated near the coal processing plants.
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संबंधित प्रश्न
Fossil fuels are ______, ______ and ______.
Explain the different types of coal.
Coal is processed in industries to get some useful products. Which of the following is not obtained from coal?
When heated in air, coal burns and produces mainly ______ gas.
The black thick liquid with ______ smell is known as coal tar.
Write True/False against the following statement.
Under high temperature and pressure, dead plants get slowly converted to coal.
Coal helps to create alumina refineries.
Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.
Coal is also known as black diamond owing to its precious nature.
What are the uses of coal?
