(1)
Fill in the blanks.

(a) The slow process of conversion of dead vegetation into coal is called.
(2)
Fill in the blanks.
(b) Coal and petroleum are formed from the dead remains of organisms and are known as .
(3)
Fill in the blanks.
(c) The black thick liquid with smell is known as coal tar.
(4)
Fill in the blanks.
(d) During the processing of coal to get coke, coal tar and are also obtained.
(5)
Fill in the blanks.
(e) The process of separating the various constituents of petroleum is known as .
(6)
Fill in the blanks.
(f) Excessive burning of fossil fuels is a major cause of .

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Solution

(1)
(a) The slow process of conversion of dead vegetation into coal is called carbonisation.

(2)
(b) Coal and petroleum are formed from the dead remains of organisms and are known as fossil fuels.

(3)
(c) The black thick liquid with unpleasant smell is known as coal tar.

(4)
(d) During the processing of coal to get coke, coal tar and coal gas are also obtained.

(5)
(e) The process of separating the various constituents of petroleum is known as refining.

(6)
(f) Excessive burning of fossil fuels is a major cause of air pollution.

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Similar questions

(a) Coal is one of the ______ used to cook food.

(2)
Fill in the blanks in the following sentences.

(b) When heated in air, coal burns and produces mainly ______ gas.

(d) Petroleum, ______ and ______ are fossil fuels.

(e) Forests and coal are ______ natural resources.

Fill in the following blanks with suitable words :

(a) Fossil fuels are ___ , ___ and ___ .

(b) Coal contains mainly ___ .

(d) The process of separation of different constituents from petroleum is called ___ .

(e) The least polluting fuel for vehicles is ___ .

(f) The burning of fossil fuels causes air ___ and also leads to global ___ .

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