Coal and Petroleum

Science Class 8 : Chapter 05

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Quick Revision : Coal and Petroleum

  • Natural Resources: Materials obtained from nature (air, water, soil, minerals).
  • Exhaustible Resources: Limited in quantity, can be exhausted (coal, petroleum, forests).
  • Inexhaustible Resources: Unlimited quantity (sunlight, air).
  • Fossil Fuels: Formed from dead remains of organisms under high pressure and temperature (coal, petroleum, natural gas).
  • Coal: Formed from vegetation, used as fuel, produces coke, coal tar, and coal gas.
  • Petroleum: Formed from sea organisms, refined to get petrol, diesel, kerosene, LPG, etc.
  • Natural Gas: Clean fuel, stored as CNG, used for power generation and as fuel.
  • Conservation: Fossil fuels are limited, need to be conserved for future generations.

Questions

Chapter Summary : Coal and Petroleum

What You Will Learn: This chapter covers natural resources, classification into exhaustible and inexhaustible resources, formation and uses of fossil fuels (coal, petroleum, natural gas), their processing, environmental impact, and conservation methods.

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