| 1. | In a hydropower plant ? | |
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Water is converted into steam to produce electricity.
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Electricity is extracted from water
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Potential energy possessed by stored water is converted into electricity
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Kinetic energy possessed by stored water is converted into potential energy
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Report Question| 2. | The material used for interconnection the solar cells in the solar panel is ? | |
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copper
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aluminium
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silver
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silicon
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| 3. | Select the important factor for the site selection of a thermal power plant. ? | |
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Cost of plant
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Availability’ of water
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Availability of fuel
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Distance from the populated area
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| 4. | Dead organisms are transformed into petroleum and natural gas in ? | |
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presence of sunlight
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presence of air
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absence of air
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none of the above
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| 5. | Energy can neither be created nor destroyed but still everybody discuss about the energy crisis because ? | |
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Usable form of energy is dissipated to the surroundings in less usable forms.
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Energy is consumed and cannot be used again.
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Energy transform into different form continuously.
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All of these
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| 6. | Wind is caused due to ? | |
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local conditions
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rotation of earth
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uneven heating of earth’s surface
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All of these
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| 7. | Wave energy is caused due to ? | |
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kinetic energy possessed by huge waves near the sea shore
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strong winds blowing across the sea
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both (a) and (b)
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potential energy possessed by the stored water
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| 8. | A good fuel should possess ? | |
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high calorific value
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moderate ignition temperature
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both high calorific value and moderate ignition temperature
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high ignition temperature
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| 9. | Which element is used in solar cells ? | |
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Sulphur
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Phosphorous
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Silicon
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Carbon
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| 10. | A solar water heater cannot be used to get hot water on ? | |
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a cloudy day
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a windy day
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a hot day
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a sunny day
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