CBSE Class 10 Physics Sources of Energy MCQs Set C

Question: One eV (electron volt) of nuclear energy is equivalent to:
a) 1.6 × 10^-14 J
b) 1.6 × 10^-12 J
c) 1.6 × 10^-19 J
d) 1.6 × 10^-13 J
Answer: c

Question: Fossil fuels are considered to be non-renewable sources of energy because
a) They are produced underground and become costly to extract.
b) They take millions of years to be produced though used in a little time
c) They produce a lot of smoke
d) They are less efficient fuels
Answer: b

Question: A tidal barrage is a barrier built over a_______
a) River bed
b) River estuary
c) River end
d) River starting
Answer: b

Question: The energy in the reactor of a nuclear power station is produced by the process of:
a) nuclear diffusion
b) nuclear fission
c) nuclear fusion
d) nuclear fermentation
Answer: b

Question: The major component of biogas is:
a) hydrogen
b) butane
c) hydrogen sulphide
d) methane
Answer: d

Question: Solar cells are made of:
a) conductors
b) insulators
c) semi-conductors
d) super-conductors
Answer: c

Question: An example of a renewable source of energy is:
a) petrol
b) natural gas
c) biogas
d) kerosene
Answer: c

Question: Choose the incorrect statement regarding wind power.
a) It is readily and abundantly available at every place of the earth free of cost.
b) It is eco-friendly and does not produce any kind of environmental pollution.
c) It is a renewable source as air itself is a renewable and inexhaustible resource
d) It is a cheap source of energy, as it does not involve any costly investment
Answer: d

Question: A non-renewable source of energy is:
a) wood
b) alcohol
c) hydrogen gas
d) natural gas
Answer: d

Question: The constituent of biogas which makes it an excellent fuel is:
a) butane
b) methane
c) propane
d) ethane
Answer: b

Question: One atomic mass unit (u) is equivalent to an energy of:
a) 931 eV
b) 9.31 MeV
c) 1 MeV
d) 931 MeV
Answer: d

Question: The heat energy released during nuclear fission and fusion is due to the:
a) conversion of stored chemicals into energy
b) conversion of momentum into energy
c) conversion of mass into energy
d) conversion of magnetism into energy
Answer: c

Question: The fuel having the lowest calorific value is:
a) coal
b) wood
c) charcoal
d) kerosene
Answer: b

Question: Which of the following is not produced by the burning of fossil fuels?
a) nitrogen oxides
b) sulphur oxides
c) sodium oxides
d) carbon oxides
Answer: c

Question: Which of the following fuels has the highest calorific value?
a) natural gas
b) methane gas
c) hydrogen gas
d) biogas
Answer: c

Question: The part of box-type solar cooker which is responsible for producing greenhouse effect is:
a) plane mirror reflector
b) black coating inside the box
c) glass sheet cover
d) utensils placed in the cooker box
Answer: c

Question: The product of petroleum used to drive heavy vehicles like trucks is:
a) petrol
b) kerosene
c) diesel
d) petroleum gas
Answer: c

Question: Two acidic oxides released on burning fossil fuels
a) Nitrogen oxides and Sulphur oxides
b) Sulphur oxides and Magnesium oxide
c) Carbon dioxide and Sulphur oxides
d) Carbon dioxide and Nitrogen oxides
Answer: a

Question: Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun‘s energy?
a) Geothermal energy
b) Wind energy
c) Nuclear energy
d) Bio-mass
Answer: c

Question: Which of the following sources of electricity involves more running expenses?
a) Thermal power station
b) Hydro power station
c) solar cells
d) Geothermal source
Answer: a 

Question: Which gas is released by anaerobic decomposition of submerged vegetation in dams?
a) Coal gas
b) Petrol gas
c) Bio-gas
d) Methane
Answer: d

Question: What is the full form of OTE?
a) Ocean thermal energy
b) O.T.Emerge
c) On track energy
d) One time energy
Answer: a

Question: Which of the following is not a form of energy?
a) Mechanical energy
b) Heat Energy
c) Muscular Energy
d) Frictional energy
Answer: d

Question: Fusion reaction is also known as
a) chemical reaction
b) elastic scattering
c) thermo nuclear reaction
d) photo nuclear reaction
Answer: c

Question: Which of the following can undergo nuclear fusion reaction?
a) Uranium
b) Deuterium
c) Barium
d) Krypton
Answer: b

Question: 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

Question: In the production of wave energy which form of energy is used?
a) Potential energy
b) Kinetic energy
c) Solar energy
d) Wind energy
Answer: b

Question: What kind of mirror is used in a solar cooker?
a) Concave mirror
b) Convex mirror
c) Plane mirror
d) None of these
Answer: a

Question: Name the ultimate source of fossil fuel
a) Coal
b) Petrol
c) Bio-gas
d) Sun
Answer: d

Question: 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

Question: Which of the following is a non-renewable source of energy?
a) Wood
b) Sun
c) Fossil fuels
d) Wind
Answer: c

Question: A solar water heater cannot be used to get hot water on
a) a sunny day
b) a cloudy day
c) a hot day
d) a windy day
Answer: b

Question: The major cause of environmental pollution is the use of:
a) Hydrogen as fuel
b) Biomass energy
c) Ocean energy
d) Fossil fuels
Answer: d

Question: The major environmental issue caused by storage of water in reservoirs for hydro power plants is:
a) Air pollution
b) Destruction of large ecosystems
c) Water pollution
d) Sound pollution
Answer: b

Question: Kinetic energy of moving air or winds in coastal or hilly areas is harnessed to do mechanical work or generate electricity by using:
a) Wind Mills
b) Generators
c) Electric Motors
d) Shafts
Answer: a

Question: Name the device which converts solar energy directly into electricity.
a) Solar cooker
b) Solar cells
c) Solar furnace
d) Semi-conductors
Answer: b

Question: Which of the following is not a biomass energy source?
a) Gobar gas
b) Coal
c) Wood
d) Nuclear energy
Answer: d

Question: Which of following are more environment friendly?
a) Burning of coal
b) Burning of firewood
c) Burning of charcoal
d) Burning of diesel
Answer: c

Question: Which of the following is a non-renewable source of energy?
a) Solar
b) Coal
c) Bio-mass
d) Wind
Answer: b

Question: Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilization?
a) Nuclear energy
b) Thermal energy
c) Solar energy
d) Geothermal energy
Answer: c

Question: A solar cooker may not cook food if:
a) the solar cooker is not placed in the shade
b) the glass sheet cover of solar cooker is not closed
c) a convex mirror reflector is not used
d) the food containers of insulating material are not used
Answer: b

Question: One MeV of nuclear energy is equivalent to:
a) 1.6 × 10⁻¹³ J
b) 1.6 × 10⁻¹⁹ J
c) 1.6 × 10⁻¹⁶ J
d) 1.6 × 10⁻¹⁵ J
Answer: a

Question: The minimum speed of wind necessary for the satisfactory working of a wind generator to produce electricity is about:
a) 15 km/h
b) 25 km/h
c) 35 km/h
d) 45 km/h
Answer: a

Question: One type of energy which has not been controlled so far is:
a) ocean thermal energy
b) nuclear fusion energy
c) geothermal energy
d) nuclear fission energy
Answer: b

Question: If the solar constant is 1.4 kW/m², then the solar energy received by 1 m² area in one hour is:
a) 5040 J
b) 504.0 kJ
c) 5040 kJ
d) 5.04 kJ
Answer: c

Question: At a hydro power plant:
a) kinetic energy possessed by stored water is converted into electrical energy
b) electricity is extracted from water
c) water is converted into steam to turn turbines and produce electricity
d) potential energy possessed by stored water is converted into electricity
Answer: d

Fill in the following blanks with suitable words :

Question: Uranium-235 atoms will split when hit by………… This is called………………..
Answer: neutrons ; nuclear fission

Question: Nuclear…………….is used in nuclear power stations for the production of electricity.
Answer: fission

Question: In a nuclear power station, nuclear fission takes place in the ………….
Answer: reactor

Question: Name the type of nuclear reaction which is involved in the working of :
(a) a hydrogen bomb.
(b) an atom bomb.
Answer: (a) Nuclear fusion (b) Nuclear fission

Question: Where, in a nuclear power station, is uranium used up ?
Answer: Reactor

Question: What type of reactions occurring inside the sun produce solar energy ?
Answer: Nuclear fusion reactions

Question: Name the device which converts sunlight into electricity.
Answer: Solar cell

Question: How much solar energy will be received by 1 m2 area in one hour if the solar constant be 1.4 kW/m2 ?
Answer: 5040 kJ