sources of energy

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MCQ Science Class 10
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Science Class 10

Sources of Energy

CBSE Board

Teacher Name : Rakesh
Total Questions : 20
Time Allowed : 60
Total Marks : 20

Q 1 :Which of the following is a non-renewable source of energy?
- Wind
- Sun
- Fossil fuels
- Wood
Q 2 :Acid rain happens because
- earth's atmosphere contains acids
- burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
- electrical charges are produced due to friction amongst clouds
- sun heats up the upper layer of the atmosphere
Q 3 :Fuel used in thermal power plants is
- water
- biomass
- uranium
- fossil fuels
Q 4 :In a hydro power plant
- potential energy possessed by stored water is converted into electricity
- electricity is extracted from water
- kinetic energy possessed by stored water is converted into potential energy
- water is converted into steam to produce electricity.
Q 5 :Which is the ultimate source of energy?
- Fossil fuels
- Sun
- Uranium
- Water
Q 6 :Which one of the following forms of energy causes least environmental pollution in the process of its harnessing and utilisation?
- Nuclear energy
- Geothermal energy
- Solar energy
- Thermal energy
Q 7 :Ocean thermal energy is due to
- pressure difference at different levels in the ocean
- temperature difference at different levels in the ocean
- energy stored by waves in the ocean
- tides arising out in the ocean
Q 8 :Which part of the solar cooker is responsible for greenhouse effect
- mirror
- coating with black colour inside the box
- glass sheet
- outer cover of the solar cooker
Q 9 :The power generated by a windmill
- depends on the height of the tower
- is more in rainy season since damp air would mean more air mass hitting the blades
- depends on wind velocity
- can be increased by planting tall trees close to the tower
Q 10 :the main constituent of biogas is
- methane
- hydrogen
- carbon dioxide
- hydrogen sulphide
Q 11 :Choose the correct statement
- Sun is considered as an inexhaustible source of energy.
- Hydro and wind energy plants are non polluting sources of energy
- There is infinite storage of fossil fuels inside the earth
- Waste from a nuclear power plant can be easily disposed off.
Q 12 :In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because
- its temperature increases
- larger amount of potential energy is converted into kinetic energy
- more water molecules dissociate into ions
- the electricity content of water increases with height
Q 13 :Choose the incorrect statement regarding wind power.
- Wind hitting the blades of a windmill causes them to rotate. The rotation thus achieved can be utilised further.
- The potential energy content of wind blowing at high altitudes is the source of wind power.
- It is expected to haeness wind power to minimum in open space.
- 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.
Q 14 :Choose the incorrect statement
- Gobar gas is produced when crops,vegetable wastes, etc., decompose in the absence of oxygen.
- We are encouraged to plant more trees so as to ensure clean environment and to provide biomass fuel.
- The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash.
- Biomass is a renewable source of energy.
Q 15 :Energy can neither be created nor destroyed but still everybody discuss about the energy crisis because.
- usable form of energy is dissipated to the surroundings in less usable form
- energy transforms into different forms continuosly
- energy is consumed and cannot be used again
- all of these
Q 16 :An ideal source of energy should have
- higher calorific value
- easy transportability
- easy accessibility
- all of these
Q 17 :Fossil fuels are
- non-renewable sources of energy
- inexhaustible sources of energy
- neither (a) nor (b)
- both (a) and (b)
Q 18 :Which of the following problems is associted with burning of coal?
- Acid rain
- Carbon dioxide emission
- Ash with toxic metal impurity
- all of these
Q 19 :Dead organisms are transformed into petroleum and natural gas in the
- presence of sunlight
- absence of air
- presence of air
- none of the above
Q 20 :Select the most important factor for the site selection of a thermal power plant.
- Distance from the populated area
- cost of plant setup
- Availability of water
- Availability of fuel

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