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Coal and petrolem are called……………..fuels...

Coal and petrolem are called……………..fuels.

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Explore conceptually related problems

(a) What happens when carbon burns in air ? Write the chemical equation of the reaction which takes place. (b) Why are coal and petroleum called fossil fuels ? (c ) Explain how coal was formed in the earth. (d) Describe how petroleum was formed in the earth (e ) Name a fossil fuel other than coal and petroleum.

Why are coal and petrodeum called fossil fuels ?

Coal, oil and natural gas are examples of fuels.

Coal gas, coke and coal are:

Coal , petrol and Kersoene are fossil fuels.

Besides coal and petroleum, which among the following is also a fossil fuel?

MBD -HARYANA BOARD-SOURCE OF ENERGY-EXAMPLE
  1. The temperature range of box type solar cooker kept in the sun for 2-3...

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  2. ………converts solar energy into electric energy

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  3. ……is used in making solar cell

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  4. A device that converts electric energy into mechanical energy.

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  5. Which of the following is not an example of bio-mass energy source ? ...

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  6. Which one of the following is not a fossil fuel?

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  7. What is a non-renewable source of energy ?

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  8. The main source of energy is ….. .

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  9. Slurry obtained from biogas plant contains maximum quantity of…… .

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  10. Which of the following countries is known as the country of wind?

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  11. The combination of solar cells is called……. .

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  12. The element used in manufacturing solar cells is…. .

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  13. The vast source of energy on the earth is ……….

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  14. Natural gas is mainly made up of a gas called.

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  15. A solar water heater cannot be used to get hot water on :

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  16. Which one of the following energies are freely available?

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  17. Can the following change be reversed? Making biogas from cow dung

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  18. A non-renewable source of energy is :

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  19. Sun produces large amounts of heat and light energy in its core throug...

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  20. Coal and petrolem are called……………..fuels.

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