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MBD -HARYANA BOARD-SOURCE OF ENERGY-EXAMPLE
- Explain why: Solar cookers are covered with glass plate.
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- Why is the box of a solar cooker painted black from inside ?
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- Write any two limitations of solar heating devices.
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- Why is it not possible to use solar cell panels to meet all our domest...
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- Write four areas where solar cell is used as source of energy?
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- Hydrogen has the highest calorific value, but it is not used as a fuel...
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- What is wind mill? Write its two advantages?
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- On what basis would you classify energy sources as : (a) renewable a...
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- On what basis would you classify energy sources as : (a) renewable a...
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- What are fossil fuels?How are they formed?why are they non-renewable s...
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- What is greenhouse effect?Explain in detail
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- Differentiate between renewable and non-renewable sources of energy wi...
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- Oceans are vast store of energy'' justify this statement
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- What is meant by ocean thermal energy
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- What are solar reflectors and solar concentrators?
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- What are the constituents of coal gas ? State one use of coal gas.
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- Give two examples of each : Fossil fuel
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- What is the range of temperature which can be achieved in a box-type s...
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- Name the device which directly converts solar energy into electrical e...
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- What is biogas?
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