How is coal tar formed?

Academic Chemistry NCERT Class 8

Coal tar is obtained by cooling the gas that is formed during the destructive distillation of coal to approximately ambient temperature.

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Updated on: 17-Mar-2023

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What Is Coal Tar
The _______ of coal produces coke, coal tar and coal gas
Describe how coal was formed. What is this process called?
Which substance is used for metalling the roads these days in place of coal tar?
Describe how coal is formed from dead vegetation .What is this process called
Which substance is formed by the carbonisation of dead vegetation?CoalCokeCoal gasCoal tar
How coal is formed? What is the use of coal and why we use it and why it takes too many years to form?
Naphthalene balls are obtained from coal tar and are used asmosquito repellanthoneybee repellantmoth repellantsnake repellant
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 __________.
The various compounds present in coal tar are separated by the process of:simple distillationdestructive distillationfractional distillationfractional crystallization
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.
Name any five substances used in everyday life which are manufactured starting from the products of coal tar.
Define destructive distillation. Name the residue formed by destructive distillation of coal.
Linux tar Command
Coal is said to be formed from the wood of trees. Why then is coal considered to be a non-renewable source of energy whereas wood is a renewable source of energy?

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