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
Fossil fuels are ______, ______ and ______.
Fossil fuels can be made in the laboratory.
Explain why fossil fuels are exhaustible natural resources.
Describe characteristics of coke.
Coal is formed from the remains of
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 ______.
The black thick liquid with ______ smell is known as coal tar.
Name the products obtained and their uses when coal is processed in industry.
When lignite becomes darker and harder over time ______ coal is formed.
Which one among the following is an extremely strong but lightweight material is used in mountain bikes and tennis rackets?
Coal helps to create alumina refineries.
Coal is also known as black diamond owing to its precious nature.
What is deep mining?
