10th Class Science Solved Paper - Science-2014

  • question_answer
    Amit lives in Delhi and is much concerned about the increasing electricity bill of his house. He took some steps to save electricity and succeeded in doing so.
    (i) Mention any two steps that Amit might have taken to save electricity.
    (ii) Amit fulfilled his duty towards the environment by saving electricity. How?
    (iii) Which alternative source of energy would you suggest Amit to use?

    Answer:

    (i) (a) He can use energy efficient electrical appliances to save electricity. This can be done by using CFL bulbs and tube lights in place of conventional filament type electric bulbs.
                (b) Use solar water heater instead of electrical geyser.
    (ii) By saving electricity, Amit is contributing towards reducing environmental degradation. Most of the electrical appliances use electrical energy which is generated by burning fossil fuels. The burning of fossil fuels causes air pollution. The production of hydroelectricity causes ecological imbalance.
    Therefore, by using less electricity he is indirectly causing less pollution.
    (iii) He can use solar energy devices like solar cooker, solar water heater and solar cells.


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