Name the product of coal which is thick black liquid having an unpleasant smell.

Academic Chemistry NCERT Class 8

Coal tar is the product of coal which is a thick black liquid having an unpleasant smell.

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Updated on: 10-Oct-2022

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Fill in the blanks.(a) Coal is one of the………….used to cook food.(b) When heated in air, coal burns and produces mainly ……….gas.(c) Coal tar is a black, thick ……….with an …………. smell.(d) Petroleum, ………….. and ……….. are fossil fuels.(e) Forests and coal are ……….. natural resources.
Fill in the blanks.(a) The slow process of conversion of dead vegetation into coal is called __________.(b) Coal and petroleum are formed from the dead remains of organisms and are known as __________.(c) The black thick liquid with __________ smell is known as coal tar.(d) During the processing of coal to get coke, coal tar and __________ are also obtained.(e) The process of separating the various constituents of petroleum is known as __________.(f) Excessive burning of fossil fuels is a major cause of __________.
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A colourless organic liquid X of molecular formula C2H4O2 turns blue litmus to red. Another colourless organic liquid Y of molecular formula C3H6O has no action on any litmus but it is used as a nail polish remover. A yet another colourless organic liquid Z of molecular formula C2H6O has also no action on litmus but it is used in tincture of iodine.(a) Name the liquid X. To which homologous series does it belong? Give the name of another member of this homologous series. (b) Name the liquid Y. To which homologous series does it belong? Write the name of another member of this homologous series. (c) Can you name an organic compound having the same molecular formula as liquid Y but which belongs to a different homologous series? What is this homologous series? (d) Name the liquid Z. To which homologous series does it belong? Write the name of another member of this homologous series.

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