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Combustion

When heated i...

Question

When heated in air, coal burns and produces mainly ___ gas.

A

sulphur

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B

hydrogen

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C

oxygen

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D

carbon dioxide

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Solution

The correct option is D carbon dioxide
When heated in air, coal burns and produces mainly carbon dioxide gas.

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Q. Question 16
Fill in the blanks in the following sentences.
(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

Q. Question 16
Fill in the blanks in the following sentences.
(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

Coal burns in air to form mainly:

Q. (1)Fill in the blanks in the following sentences.

(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.

(3)
Fill in the blanks in the following sentences.

(c) Coal tar is a black, thick ______ with an ______ smell.

(4)
Fill in the blanks in the following sentences.

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

(5)
Fill in the blanks in the following sentences.

(e) Forests and coal are ______ natural resources.

Q. Coal, when heated in air produces:

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