Advertisements
Advertisements
प्रश्न
Explain the following.
Petrol, diesel, and coal are fossil fuels.
Advertisements
उत्तर
- Fossil fuels are formed from plants, animals and other organisms that have been buried under the ground millions of years ago.
- Residues buried in the Earth's interior are weathered by temperature and crustal pressure to form coal, mineral oil (petrol, diesel) and natural gas.
- As these substances release energy after combustion, they are used as fuel.
- Therefore, petrol, diesel, coal are fossil fuels.
APPEARS IN
संबंधित प्रश्न
Describe how coal is formed from dead vegetation. What is this process called?
Coke is almost pure form of carbon.
Describe characteristics of coke.
Anthracite is known as the highest-grade coal. Give reason.
Explain the different types of coal.
Coal is formed from the remains of
Which substance is formed by the carbonisation of dead vegetation?
Naphthalene balls are obtained from coal tar and are used as
When heated in air, coal burns and produces mainly ______ gas.
Coal tar is a black, thick ______ with an ______ smell.
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Loca is obtained from mines.
The slow process of conversion of dead vegetation into coal is called ______.
During the processing of coal to get coke, coal tar and ______ are also obtained.
Name the products obtained and their uses when coal is processed in industry.
______ coal is black and dull coal.
______ is used to make face packs and cosmetics.
Coal helps to create alumina refineries.
Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.
What is deep mining?
