Write the characteristics and some important uses of coal
NCERT Class VIII
Science - Exemplar Problems
Chapter 5. Coal and Petroleum
Answers
1.It is a black rock like hard material.
2. It is dug out from coal mines inside the earth.
3. It is the main source of energy in India.
4. It produces heat energy which is used for various purposes in homes, transport and industry.
5. Coal is also known as fossil fuels because they are formed by the decomposition of prehistoric plants and animals buried under the earth millions of years ago.
6. Coal is non renewable sources of energy because they cannot be produced quickly again.
USES of coal:
1.It is used in the manufacture of fuel gases like coal gas.
2. It is used as a fuel in households, thermal power plants and in industry.
3. It is used in the manufacture of synthetic petrol and synthetic natural gas.
4. It is used to make coke.
5. It is used as a Source of organic compound like benzene, toluene, phenol, anthracene, etc.
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Answer:
1.It is a black rock like hard material.
2. It is dug out from coal mines inside the earth.
3. It is the main source of energy in India.
4. It produces heat energy which is used for various purposes in homes, transport and industry.
5. Coal is also known as fossil fuels because they are formed by the decomposition of prehistoric plants and animals buried under the earth millions of years ago.
6. Coal is non renewable sources of energy because they cannot be produced quickly again.
USES of coal:
1.It is used in the manufacture of fuel gases like coal gas.
2. It is used as a Source of organic compound like benzene, toluene, phenol, anthracene, etc.
3. It is used as a fuel in households, thermal power plants and in industry.
4. It is used in the manufacture of synthetic petrol and synthetic natural gas.
5. It is used to make coke.
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