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What is the main purpose behind the use ...

What is the main purpose behind the use of a mirror in a solar cooker ?

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Solhr cookers achieve a higher temperature by using mirrors to focus the rays of the sun.
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ZEN PUBLICATION-SOURCES OF ENERGY-ZEN ADDITIONAL QUESTIONS SECTION ( VERY-SHORT-ANSWER IVSAI TYPE QUESTIONS )
  1. Why are black surfaces utilised for making solar cooker and solar wate...

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  2. What is a solar cell?

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  3. What is the main purpose behind the use of a mirror in a solar cooker ...

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  4. Name any two materials used for making solar cells.

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  5. State one advantage of harnessing energy from the sea [or oceans ].

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  6. Name the two devices that work using heat energy of the sun.

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  7. How does combustion of fossil fuels cause greenhouse effect?

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  8. Name the two major components present in the leftover slurry of a biog...

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  9. Name the major constituents of biogas and their approxinate percentage...

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  10. A student constructed a box-type solar cooker and covered it with a gl...

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  11. List any two limitations in harnessing wind energ.

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  12. List two forms of energy where solar energy manifests itself in ocens.

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  13. Name two combustible compounds of biogas.

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  14. Name the device whiech converts sunlight into electricity.

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  15. Name the microorganisms which decompose cowdung biogas.

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  16. How has traditional use of wind and water energy been modifled for our...

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  17. What is the minimum speed of wind to run a windmill to maintain the ne...

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  18. How is the increase in demand for energy affecting our environment adv...

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  19. List two main advantages of solar cells.

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  20. Why is CNG considered an environmental friendly fuel?

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