Advertisements
Advertisements
प्रश्न
Explain the following.
Petrol, diesel, and coal are fossil fuels.
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 ______.
Explain why fossil fuels are exhaustible natural resources.
Coal tar is a mixture of various substances.
Coal is processed in industries to get some useful products. Which of the following is not obtained from 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
Fill in the blanks in the following sentence.
When heated in air, coal burns and produces mainly ______ gas.
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Loca is obtained from mines.
Write True/False against the following statement.
Under high temperature and pressure, dead plants get slowly converted to coal.
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.
Coke is used in the preparation of dyes, explosives, paints synthetic fibers, and pesticides.
What is deep mining?
Explain the destructive distillation of Coal.
What are the uses of coal?
