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Class 10 Science
Sources Of Energy
Quiz 1
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Which of the following is a non-renewable source of energy?
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Wood
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Sun
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Fossil fuels
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Wind
Explanation
Fossil fuels
Acid rain happens because
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Sun heats up the upper layer of the atmosphere
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burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
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electrical charges are produced due to friction amongst clouds
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earth atmosphere contains acids
Explanation
burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
Fuel used in thermal power plants is
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water
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uranium
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biomass
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fossil fuels
Explanation
fossil fuels
In a hydro power plant
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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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electricity is extracted from water
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water is converted into steam to produce electricity
Explanation
potential energy possessed by stored water is converted into electricity
Which is the ultimate source of energy?
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Water
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Sun
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Uranium
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Fossil fuels
Explanation
Sun
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
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Nuclear energy
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Thermal energy
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Solar energy
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Geothermal energy
Explanation
Solar energy
Ocean thermal energy is due to
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energy stored by waves in the ocean
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temperature difference at different levels in the ocean
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pressure difference at different levels in the ocean
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tides arising out in the ocean
Explanation
temperature difference at different levels in the ocean
The major problem in harnessing nuclear energy is how to
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split nuclei
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sustain the reaction
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dispose off spent fuel safely
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convert nuclear energy into electrical energy
Explanation
dispose off spent fuel safely
Which part of the solar cooker is responsible for greenhouse effect?
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Coating with black colour inside the box
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Mirror
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Glass sheet
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Outer cover of the solar cooker
Explanation
Glass sheet
The main constituent of biogas is
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methane
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carbon dioxide
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hydrogen
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hydrogen sulphide
Explanation
methane
The power generated in a windmill
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is more in rainy season since damp air would mean more air mass hitting the blades
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depends on the height of the tower
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depends on wind velocity
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can be increased by planting tall trees close to the tower
Explanation
depends on wind velocity
Choose the correct statement.
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Sun is considered as an inexhaustible source of energy
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There is infinite storage of fossil fuel inside the Earth
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Hydro and wind energy plants are non polluting sources of energy
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Waste from a nuclear power plant can be easily disposed off
Explanation
Sun is considered as an inexhaustible source of energy
In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because
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its temperature increases
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larger amount of potential energy is converted into kinetic energy
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the electricity content of water increases with height
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more water molecules dissociate into ions
Explanation
larger amount of potential energy is converted into kinetic energy
Choose the incorrect statement regarding wind power.
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It is expected to harness wind power to minimum in open space.
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The potential energy content of wind blowing at high altitudes is the source of wind power.
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Wind hitting the blades of a windmill causes them to rotate. The rotation thus achieved can be utilised further.
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One possible method of utilising the energy of rotational motion of the blades of a windmill is to run the turbine of an electric generator.
Explanation
The potential energy content of wind blowing at high altitudes is the source of wind power.
Choose the incorrect statement.
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We are encouraged to plant more trees so as to ensure clean environment and also provide biomass fuel.
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Gobar gas is produced when crops, vegetable wastes, etc. , decompose in the absence of oxygen.
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The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash.
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Biomass is a renewable source of energy.
Explanation
The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash.
what is true about hydroelectric power plants?
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water is converted into steam and the it is used to rotate turbine
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it uses fossils fuels to generate electricity
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The potential energy of the water is converted into kinetic energy of water and which is then used to rotate turbine to generate electricity
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None of these
what are the drawback of solar energy heating devices?
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It can not be used in night
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it can not be used if the sky is covered with clouds
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the direction has to be changed after short interval in order to have devices always facing sun
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All the above
which gas is not present in Bio-gas?
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Methane
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Carbon dioxide
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Hydrogen sulphide
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Nitrogen
The power generated in a windmill?
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Depends on the height of the tower.
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Depends on wind velocity
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Can be increased by planting tall trees close to the tower
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none of these
which of these is true for solar energy?
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The energy obtained from sun is called solar energy
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Ultra violet rays are completely absorbed and eliminated by the atmosphere
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it is a renewable source of energy
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All the above
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