Question

(i) What is black gold and how is it formed? (ii) Why coal and petroleum are considered as air pollutants?

Answer 1

coal is black gold.it is formed by the vegetative matter which was buried in the past ages has changed to coal due to high temperature and pressure

coal and petroleum products are composed of carbon.when it is burnt ,it produces large amount of smoke, which is very dangerous. so these are considered as air pollutants

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Answer 2

Petroleum is also known as black gold.

Explanation:

• Petroleum is called the black gold as it is black in colour when extracted.
• The dead remains of plants and animals or fossils which was buried in the ages past is changed to coal due to high temperature and pressure. It is also called fossil fuel. This is extracted as crude oil.
• The petroleum is mainly composed of carbon atoms. It is considered as pollutant because when it is burnt, it produces large amount of smoke.

To learn more:

1) Why is petroleum called black gold:

https://brainly.in/question/906225

2) What was known as black gold during the roman empire:

https://brainly.in/question/12582828