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Q 1. Choose the incorrect statement
We are encouraged to plant more trees so as to ensure clean environment and also provide biomass fuel
Gobar-gas is produced when crops, vegetable wastes, etc., decompose in the absence of oxygen
The main ingredient of biogas is methane and it gives a lot of smoke and also produces a lot of residual ash.
Bio-mass is a renewable source of energy
Q 2. Which power plant uses coal to generate electricity?
Hydro Power plant
Nuclear Power Plant
Thermal Power Plant
Biogas Power Plant
Q 3. The use of charcoal is discouraged even though it is a better fuel than coal, because:
charcoal is prepared from destructive distillation of wood
Charcoal burns with flames
coal has a higher heat generation efficiency
coal burns comparatively with less smoke
Q 4. The material used for making solar cells is
Silver
Gold
Silicon
Copper
Q 5. What is the major problem in harnessing nuclear energy?
Splitting of the nuclei
Duration for which the reaction has to be sustained.
Safe disposal of the spent fuel.
Conversion of nuclear energy into electrical energy.
Q 6. Power plant that uses kinetic and potential energy of water to generate electricity is called
Hydroelectric Power plant
Nuclear Power Plant
Thermal Power Plant
Biogas Power Plant
Q 7. A typical solar cell can produce about ____ electricity.
7 W
10 W
0.7 W
0.5 W
Q 8. Estimated value of solar constant is:
2.4 kJ per second per square metre
1.4 kJ per second per square metre
5.2 kJ per second per square metre
3.4 kJ per second per square metre
Q 9. Ocean thermal energy is due to:
energy stored by waves in the ocean
temperature difference at different levels in the ocean
pressure difference at different levels in the ocean
tides arising out in the ocean
Q 10. Acid rain happens because:
the sun leads to heating of upper layer of the atmosphere
the burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere.
electrical charges are produced due to friction amongst clouds
earth's atmosphere contains acids
Q 11. Which one of the following is not a source of non-conventional energy?
coal
solar energy
Nuclear energy
Ocean thermal energy
Q 12. Nuclear energy is
Conventional source of energy
Non-conventional source of energy
In-exhaustible energy
None of the above
Q 13. Major pollutants produced during combustion of fossil fuels are
Nitrogen
Carbon
Sulphur
Oxides of carbon, sulphur, nitrogen
Q 14. The capacity of windmill farm situated in Kanyakumari is
420 MW
380 MW
200 MW
250 MW
Q 15. The main constituent of biogas is:
Methane
Ethylene
Hydrogen and oxygen
Oxygen and Ethane
Q 16. The major source of energy used to produce electricity in India is
Nuclear
Coal
Petroleum and Natural gas
Hydro
Q 17. The solar energy reaching unit area at outer edge of the earth's atmosphere exposed perpendicularly to the rays of the Sun at the average distance between the Sun and earth is known as
Solar heating
Greenhouse effect
Solar constant
Solar heat capacity of earth
Q 18. Complete the sentence, The Sun has been radiating an enormous amount of energy at the present rate for nearly------- years and will continue radiating at that rate for about -------- years more.
5 billion, 5 billion
10 billion, 10 billion
2 billion, 5 billion
5 billion, 10 billion
Q 19. Which radiations of sunlight are used in heating a solar cooker?
ultraviolet radiation
infrared radiation
visible light
all of the above
Q 20. Which one of the following is not a fossil fuel?
Coal gas
Liquified petroleum gas
Compressed natural gas
Biogas
Q 21. In a hydroelectric powerplant, 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
the electricity content of water increases with height
more water molecules dissociate into ions
Q 22. The power generated in a windmill:
is more in rainy season since damp air would mean more air mass hitting the blades.
depends on the height of the tower
depends on wind velocity
can be increased by planting tall trees close to the tower
Q 23. A solar cell converts?
Heat energy into Electrical energy
Sound energy into Electrical energy
Solar energy into heat energy
Solar energy into Electrical energy
Q 24. The temperature difference between the deep and shallow water of ocean is utilized to obtain:
Geothermal energy
Ocean thermal energy
Sea-waves energy
Tidal energy
Q 25. The minimum speed of the wind which is required to run a windmill is:
5 km/h
35 km/h
15 km/h
25 km/h
Q 26. The fossil fuels which are replenished again are called
renewable
natural fuels
man made fuels
non-renewable
Q 27. Which non-conventional source of energy uses the energy mass equation (E = Δmc2) to generate electricity?
Geothermal Energy
Tidal energy
Nuclear energy
Solar cells
Q 28. Which of the following form of energy is not achieved from the sea?
Wave energy
Nuclear energy
Thermal energy
Tidal energy
Q 29. Which of the following fuel is the least polluting?
Diesel
Hydrogen
LPG
CNG
Q 30. Which of these does not require any fuel to generate electricity?
Thermal power plant
Nuclear power plant
Biogas power plant
Windmill
Q 31. Among the following colours, which is the highest absorbent of heat radiations?
Black
Red
Blue
White
Q 32. The electric needs of an artificial satellite are fulfilled by using
solar cell panels
chemicals
wind energy
nuclear energy
Q 33. Which one is the non-renewable source of energy?
Solar energy
Wind energy
Ocean wave energy
Natural gas
Q 34. Gasoline is produced by refining which fossil fuel?
natural gas
coal
petroleum
propane
Q 35. Choose the incorrect statement regarding wind power
It is expected to harness wind power to minimum in open spaces.
The potential energy content of wind blowing at high altitudes is the source of wind power.
Wind hitting at the blades of a windmill causes them to rotate. The rotation thus achieved can be utilised further.
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 36. How much solar energy is received by India in one year?
5 trillion kWh
5000 trillion kWh
50 trillion kWh
500 trillion kWh
Q 37. Which part of the solar cooker is responsible for greenhouse effect?
Coating with black colour inside the box
mirror
glass plate
Outer cover of the solar cooker
Q 38. Most of the energy we use originally comes from
oceans
air
soil
sun
Q 39. In a hydro-electric power plant:
Potential energy possessed by stored water is converted into electricity
Kinetic energy possessed by stored water is converted into potential energy
Electricity is extracted from water
Water is converted into steam to produce electricity
Q 40. Temperature difference required between the water at the surface and water at depths up to 2 km to operate ocean thermal conservation plants is
20oC and more
10 to 15oC
15oC to 20oC
50oC

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