1.
Which of the following is a non-renewable source of
energy?
(a) Wood
(b) Sun
(c) Fossil fuels
(d)
Wind
Answer: (c) Fossil fuels
2.
Acid rain happens because
(a) Sun heats up the upper layer
of the atmosphere
(b) burning of fossil fuels releases oxides of carbon,
nitrogen and sulphur in the atmosphere
(c) electrical charges are produced
due to friction amongst clouds
(d) earth atmosphere contains
acids
Answer: (b) burning of fossil fuels releases oxides of carbon, nitrogen and sulphur in the atmosphere
3. Energy can neither be created nor destroyed but still everybody discuss
about the energy crisis because
(a) Energy transform into different form
continuously.
(b) Usable form of energy is dissipated to the surroundings in
less usable forms.
(c) Energy is consumed and cannot be used again.
(d)
All of these
Sources of Energy Class 10 MCQ with Answer: d
Explanation:
(d) Energy
can neither be created nor be destroyed but usable form is dissipated to
surrounding in less usable farm which can’t be used again.
4. An ideal source of energy should have
(a) higher calorific value
(b)
easy transportability
(c) easy accessibility
(d) All of
these
Answer: d
Explanation:
(d) These are the characterises of ideal source
of energy.
5. Fossile fuels are
(a) non-renewable source of energy
(b) renewable
source of energy
(c) both (a) and (b)
(d) Neither (a) nor
(b)
Answer: a
Explanation:
(a) Fossile fuels were formed over million of
years ago and there are only limited reserve. So they are non-renewable source
of energy.
6. Dead organisms are transformed into petroleum and natural gas in
(a)
presence of air
(b) absence of air
(c) presence of sunlight
(d) none of
the above
Answer: b
Explanation:
(b) absence of air
7. Which of the following problem is associated with a burning of coal?
(а) Carbon-dioxide emission
(b) acid rain
(c) ash with toxic metal
supurity
(d) all of these.
Answer: d
Explanation:
(d) all of these.
8. Select the important factor for the site selection of a thermal power
plant.
(a) Distance from the populated area
(b) Availability of fuel
(c) Availability’ of water
(d) Cost of plant
Answer: c
Explanation:
(c) Water is required to produce steam. Thermal
power plants are setup near the coal field and transmission of electricity is
easy than transporting fuel.
9. Hydropower plant are located in
the
(a) desert area
(b) plane area
(c) hilly terrains
(d) none-of
above
Answer: c
Explanation:
(c) Hydroelectric power plant are generally
located in high hilly areas where dam can easily be buit and large reservoir for
storage of water can be obtained.
10. Biogas is a better fuel than animal dung cake because
(a) biogas has
lower calorific value.
(b) animal dung cake has high calorific value
(c)
biogas bums smoke and leaves no residue
(d) biogas is used as a fuel for
cooking only wheareas dung cake can be used for cooking, illuminant the
lanterns.
Answer: c
Explanation:
(c) Biogas has high calorific value and leave no
residue, no smoke after burning and can be used for domestic purpose, running
engins and in gas lanterns for illumination.
11. Which of the following organism produces biogas from cow drug sherry in
the biogas plant?
(a) aerobic bectria
(b) anaerobic bectria
(c)
prolozoa
(d) fungi
Answer: b
Explanation:
(b) In the absence of oxygen, anaerobic
micro-organism decomposed the compound of cow- dung sturry to generate
biogas.
12. Wind is caused due to
(a) uneven heating of earth’s surface
(b)
rotation of earth
(c) local conditions
(d) All of
these
Answer: d
Explanation:
(d) All are the factors that responsible for the
blowing of wind.
13. What are the disadvantage of solar energy
(a) A large surface area is
required collect the solar
(b) Daily average of solar energy varies from 4 to
7 kwh/m2
(c) Highly hazardous toxic material is used in the manufacturing of
solar device.
(d) All of the above are
disadvantages.
Answer: d
Explanation:
(d) All the points given are the disadvantage
age of using solar energy.
14. The temperature inside the solar cooker ranges from
(a) 500-100°C
(b) 100-140°C
(c) 150-200°C
(d) 70-80°C
Sources of Energy Questions and Answer: bExplanation:
(b) The box type
solar cooker have a range 100-140°C.
15. The use of reflector in the solar cooker is to
(a) Decrease
efficiency
(b) create green house effect
(c) increase efficiency
(d)
none of these
Answer: c
Explanation:
(c) Reflectors (mirror) are used to focus the
sun rays along with heat radiation inside the box to achieve high
temperature.
16. Solar cells are made of
(a) germanium
(b) silicon
(c) silver
(d) aluminium
Answer: b
Explanation:
(b) special grade silicon is used for making
solar cells.
17. The material used for interconnection the solar cells in the solar panel
is
(a) silicon
(b) silver
(c) aluminium
(d)
copper
Answer: b
Explanation:
(b) Silver is the best conductor of
electricity.
18. A solar panel is made by combining in an arrangement
(a) solar
concentrator
(b) solar cookers
(c) solar cells
(d) solar
chimney
Answer: c
Explanation:
(c) A large number of solar cells connected
together in a particular arrangement to deliver useful electrical power is
called solar cell panel.
19. Tidal energy is a farm of energy obtained from the
(a) motion of
surface water in ponds
(b) ocean in the form of tidal waves
(c) tides
occurs in the river water
(d) motion of the wave in
sea
Answer: b
Explanation:
(b) The energy produced by the surge of ocean
water during high and low tides due to difference in sea level is called tidal
energy.
20. Tidal energy is harnessed by constructing
a dam across
(a) narrow opening to the sea
(b) wide opening to the sea
(c) the river in hilly trains
(d) the river in plane
areas
Answer: a
Explanation:
(a) Tidal energy is harnessed by constructing a
dam near the shores across narrow opening it.
21. Wave energy is caused due to
(a) strong winds blowing across the
sea
(b) kinetic energy possessed by huge waves near the sea shore
(c)
potential energy possessed by the stored water
(d) both (a) and
(b)
Answer: d
Explanation:
(d) The waves are generated by a strong wind due
to solar energy across the sea.
22. The working fluid in ocean thermal power plant is
(a) Volatile liquid
like ammonia
(b) petrol
(c) charcoal
(d) liquified petroleum
gas
Answer: a
Explanation:
(a) volatile liquid like ammonia
23. Geothermal energy is
(a) Heat energy in the interior of earth
(b)
energy of molten mars exists in the farm of magma inside the earth.
(c)
molten lava on the surface of earth
(d) energy obtained from solar thermal
electric plants
Answer: c
Explanation:
(c) The heat energy trapped in the certain
region of earth’s crust is called geo thermal energy.
24. U-235 will undergo fission by
(a) low energy neutrons only
(b) high
energy neutrons only
(c) medium energy neutrons
(d) low energy protons
only
Answer: d
Explanation:
(d) Heavy nucleus such as uranuim-235, when
bombarded with low energy neutrons split into lighter nuclear with the
liberation of large amount of energy.
25. In a hydropower
plant [NCERT Exemplar Problems]
(a) Potential energy possessed by stored
water is converted into electricity
(b) Kinetic energy possessed by stored
water is converted into potential energy
(c) Electricity is extracted from
water
(d) Water is converted into steam to produce
electricity.
Answer: a
Explanation:
(a) The stored water behind the dam has a
potential energy which charges into the kinetic energy of falling water. This
kinetic energy is utilized to rotate the turbine to produce
electricity.
26. Which is the ultimate source of energy?
(a)
Water
(b) Sun
(c) Uranium
(d) Fossil fuels
Answer: b
Explanation:
(b) Sun is the ultimate source of energy
directly or indirectly, all the form of energy are desired from solar
energy.
27. Which one of the
following forms of energy leads to least environmental pollution in the process
of its harnessing and utilisation? [NCERT Exemplar Problems]
(a) Nuclear
energy
(b) Thermal energy
(c) Solar energy
(d) Geothermal
energy
Answer: c
Explanation:
(c) Solar energy leads to least environmental
pollution in the process of its harnessing and utilisation.
28. Ocean thermal energy is due to
(a) energy
stored by waves in the ocean
(b) temperature difference at different levels
in the ocean
(c) pressure difference at different levels in the ocean
(d)
tides arising out in the ocean
Answer: b
Explanation:
(b) Energy of warm surface water used to
vaporise the low boiling point liquid ammonia. This vapours at high pressure is
used to strin the turbines to generate electricity. Deep ocean cold water again
condenses the used vapour into liquid.
29. The major problem in harnessing nuclear energy is how to
(a) split nuclei?
(b) sustain the reaction?
(c) dispose off
spent fuel safely?
(d) convert nuclear energy into electrical
energy?
Answer: c
Explanation:
(c) The waste product obtained from nuclear
power plant is highly radioactive material and harmful for human beings and
environment.
30. Which part of the solar cooker is responsible for green house effect?
[NCERT Exemplar Problems]
(a) Coating with black colour inside the box
(b)
Mirror
(c) Glass sheet
(d) Outer cover of the solar
cooker
Answer: c
Explanation:
(c) Glass lid of solar cooker trapped the heat
energy inside the box.
31. The power generated in a windmill [NCERT Exemplar Problems]
(a) is
more in rainy season since damp air would mean more air mass hitting the
blades
(b) depends on the height of the tower
(c) depends on wind
velocity
(d) can be increased by planting tall trees close to the
tower
Answer: a
Explanation:
(a) About 75% methane is present in
bir-gas
32. Choose the correct statement [NCERT Exemplar Problems]
(a) Sun can be
taken as an inexhaustible source of energy
(b) There is infinite storage of
fossil fuel inside the earth
(c) Hydro and wind energy plants are
non-polluting
(d) Waste from a nuclear power plant can be easily disposed
off
Answer: c
Explanation:
(c) In rainy season, wind velocity is higher. So
the blades of windmill moves with greater speed.
33. A good fuel should possess
(a) high ignition temperature
(b)
moderate ignition temperature
(c) high calorific value
(d) both high
calorific value and moderate ignition
temperature
Answer: d
34. The variety of coal which has the highest car-bon content
(a)
Anthracite
(b) Peat
(c) Bituminous
(d)
Lignite
Answer: a
35. Unit of calorific value of a substance is
(a) Kcal
(b) Joules
(c) J kg
(d) J/kg
Answer: d
36. Biogas is formed in the
(a)
presence of air only
(b) presence of water only
(c) absence of air
only
(d) presence of water and absence of
air
Answer: d
37. Solar energy can be directly converted to elec-trical energy by which of
the following de-vices?
(a) solar cooker
(b) solar heater
(c) solar
cell
(d) solar geyser
Answer: c
38. Which of the following is the ultimate source of energy?
(a) Water
(b) Sun
(c) Fossil fuels
(d) Uranium
Answer: b
39. Which of the following gases is the main con-stituent of natural gas?
(a) Methane
(b) Ethane
(c) Propane
(d)
Butane
Answer: a
40. Which element is used in solar cells?
(a) Carbon
(b) Silicon
(c)
Phosphorous
(d) Sulphur
Answer: b
41. Ocean thermal energy is produced due to
(a) pressure difference at
different levels in the ocean.
(b) temperature difference at different levels
in the ocean.
(c) energy stored by waves in the ocean.
(d) tides rising
out of the ocean.
Answer: b
42. A device in which electricity is produced by the process of controlled
nuclear fission reaction is called
(a) nuclear chain reaction
(b) hydel
power plant
(c) nuclear reactor
(d) thermal power
plant
Answer: c
43. One major problem in harnessing nuclear energy is
(a) converting
nuclear energy into electrical energy.
(b) sustaining the reaction.
(e)
splitting the nuclei.
(d) disposing off spent fuel
easily.
Answer: d
44. Spent slurry (Bio-waste after obtaining biogas) is used as
(a)
fuel
(b) manure
(c) food for livestock
(d) used again for generating
biogas
Answer: b
45.
Fuel used in thermal power plants is
(a) water
(b)
uranium
(c) biomass
(d) fossil fuels
Answer: (d) fossil fuels
46.
In a hydro power plant
(a) potential energy possessed by
stored water is converted into electricity
(b) kinetic energy possessed by
stored water is converted into potential energy
(c) electricity is extracted
from water
(d) water is converted into steam to produce
electricity
Answer: (a) potential energy possessed by stored water is converted into electricity
47.
Which is the ultimate source of energy?
(a) Water
(b)
Sun
(c) Uranium
(d) Fossil fuels
Answer: (b) Sun
48.
Which one of the following forms of energy leads to least
environmental pollution in the process of its harnessing and utilisation?
(a)
Nuclear energy
(b) Thermal energy
(c) Solar energy
(d) Geothermal
energy
Answer: (c) Solar energy
49.
Ocean thermal energy is due to
(a) energy stored by waves
in the ocean
(b) temperature difference at different levels in the ocean
(c) pressure difference at different levels in the ocean
(d) tides arising
out in the ocean
Answer: (b) temperature difference at different levels in the ocean
50.
The major problem in harnessing nuclear energy is how to
(a) split nuclei
(b) sustain the reaction
(c) dispose off spent fuel
safely
(d) convert nuclear energy into electrical
energy
Answer: (c) dispose off spent fuel safely
51.
Which part of the solar cooker is responsible for greenhouse
effect?
(a) Coating with black colour inside the box
(b) Mirror
(c)
Glass sheet
(d) Outer cover of the solar cooker
Answer: (c) Glass sheet
52.
The main constituent of biogas is
(a) methane
(b)
carbon dioxide
(c) hydrogen
(d) hydrogen
sulphide
Answer: (a) methane
53.
The power generated in a windmill
(a) is more in rainy
season since damp air would mean more air mass hitting the blades
(b) depends
on the height of the tower
(c) depends on wind velocity
(d) can be
increased by planting tall trees close to the tower
Answer: (c) depends on wind velocity
54.
Choose the correct statement.
(a) Sun is considered as an
inexhaustible source of energy
(b) There is infinite storage of fossil fuel
inside the Earth
(c) Hydro and wind energy plants are non polluting sources
of energy
(d) Waste from a nuclear power plant can be easily disposed
off
Answer: (a) Sun is considered as an inexhaustible source of energy
55.
In a hydroelectric power plant more electrical power can be
generated if water falls from a greater height because
(a) its temperature
increases
(b) larger amount of potential energy is converted into kinetic
energy
(c) the electricity content of water increases with height
(d) more
water molecules dissociate into ions
Answer: (b) larger amount of potential energy is converted into kinetic energy
56.
Choose the incorrect statement regarding wind power.
(a)
It is expected to harness wind power to minimum in open space.
(b) The
potential energy content of wind blowing at high altitudes is the source of wind
power.
(c) Wind hitting the blades of a windmill causes them to rotate. The
rotation thus achieved can be utilised further.
(d) 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.
Answer: (b) The potential energy content of wind blowing at high altitudes is the source of wind power.
57.
Choose the incorrect statement.
(a) We are encouraged to
plant more trees so as to ensure clean environment and also provide biomass
fuel.
(b) Gobar gas is produced when crops, vegetable wastes, etc., decompose
in the absence of oxygen.
(c) The main ingredient of biogas is ethane and it
gives a lot of smoke and also produces a lot of residual ash.
(d) Biomass is
a renewable source of energy.
Answer: (c) The main ingredient of biogas is ethane and it gives a lot of smoke and also produces a lot of residual ash.