Name any two other main elements apart from carbon which are present in coal and petroleum. Write the Chemical reaction when combustion of these elements takes place on burning of coal.

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Solution

Nitrogen and sulphur
On combustion
S + O₂ ----> SO₂
N + O₂ ----> NO₂

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Similar questions

(a) What happens when carbon burns in air? Write the chemical equation of the reaction which takes place.
(b) Why are coal and petroleum called fossil fuels?
(c) Explain how coal was formed in the earth.
(d) Describe how petroleum was formed in the earth.
(e) Name a fossil fuel other than coal and petroleum.

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___ is the main chemical element present in coal and petroleum.

Q. Other than Carbon what are the elements present in coal?

Q. Write balanced chemical equations for the following:
(a) burning of coal (carbon) in a sufficient supply of air
(b) When coal burns in insufficient amount of oxygen, carbon monoxide is formed.
(c) Name the type of reaction in each of the above cases.
(d) How is carbon monoxide harmful?

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Name any two other main elements apart from carbon which are present in coal and petroleum. Write the Chemical reaction when combustion of these elements takes place on burning of coal.

Nitrogen and sulphur On combustion S + O2 ----> SO2 N + O2 ----> NO2

Nitrogen and sulphur
On combustion
S + O₂ ----> SO₂
N + O₂ ----> NO₂