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Sources of Ener...

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  • Question 1
    1 / -0

    Hydroelectric plants interfere with the natural eco-systems.  

  • Question 2
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    65% by volume is hydrogen gas in the biogas. 

  • Question 3
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    Coal and petroleum are called fossil fuels.      

  • Question 4
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    The gas that is obtained by the fermentation of biomass is :

  • Question 5
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    The super heated steam is raised in geothermal plants by the heat of:

  • Question 6
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    The non-renewable source of energy amongst the following is :

  • Question 7
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    In a wind mill the electric energy is converted into mechanical energy.         

  • Question 8
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    The sources of energy which are being produced continuously in nature and which are inexhaustible are called:

  • Question 9
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    Which of the following is an important source of light for us?

  • Question 10
    1 / -0

    .......... is formed by the transformation of trees buried inside the earth millions of years ago.

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