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What are fossils ?...

What are fossils ?

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MBD -HARYANA BOARD-SOURCE OF ENERGY-EXAMPLE
  1. Describe the process by which energy is released by the sun.

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  2. Introduction to nuclear reactions | Nuclear fission and Nuclear fusion

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  3. What are fossils ?

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  4. What are fossil fuels?What will happen if fossil fuels are use up at a...

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  5. Why is L.P.G.considered an ideal fule?

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  6. State the advantages of the nuclear fusion reactions over nuclear fiss...

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  7. How is hydroelectricity generated at hydroelentirc power plant? Give i...

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  8. What is biogas? Give any four uses?

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  9. Give two reasons for using gobar (cow dung) in biogas plant.

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  10. Write the general principle involved in generating nuclear energy, Nam...

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  11. What is natural gas? What are its advantages over other fuels?

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  12. Why burning firewood in traditional chulhas is not considered advantag...

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  13. Explain LPG.What are its uses?

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  14. Explain why: Solar cookers are covered with glass plate.

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  15. Why is the box of a solar cooker painted black from inside ?

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  16. Write any two limitations of solar heating devices.

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  17. Why is it not possible to use solar cell panels to meet all our domest...

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  18. Write four areas where solar cell is used as source of energy?

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  19. Hydrogen has the highest calorific value, but it is not used as a fuel...

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  20. What is wind mill? Write its two advantages?

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