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Sources of Energy Class 10 MCQs Questions with Answers
Solving the Sources of Energy Multiple Choice Questions of Class 10 Science Chapter 14 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Sources of Energy Class 10 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 14 Science Class 10 and cross-check your answers during preparation.
Question 1.
Assertion: Fuel has to be burnt to obtain heat energy.
Reason: The minimum temperature to which a fuel must be heated so that it may catch fire and start burning is known as ignition temperature.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(b) Both A and R are true but R is not the correct explanation of A.
Question 2.
Assertion: The major constituent of biogas is methane.
Reason: Biogas is produced by the aerobic degradation by animal wastes like cow ding in the presence of water.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false.
Question 3.
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) presence of water and absence of air
Question 4.
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) biogas bums smoke and leaves no residue
Question 5.
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) nuclear energy
Question 6.
The working fluid in ocean thermal power plant is
(a) Volatile liquid like ammonia
(b) petrol
(c) charcoal
(d) liquified petroleum gas
Answer
(a) Volatile liquid like ammonia
Question 7.
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) temperature difference at different levels in the ocean.
Question 8.
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) nuclear reactor
Question 9.
India exploded her first underground nuclear device at
(a) Ranchi
(b) Kota
(c) Jaipur
(d) Pokhran
Answer
(d) Pokhran
Question 10.
Fusion reaction is also known as
(a) chemical reaction
(b) elastic scattering
(c) thermonuclear reaction
(d) photo nuclear reaction
Answer
(c) thermonuclear reaction
Question 11.
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) both high calorific value and moderate ignition temperature
Question 12.
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) molten lava on the surface of earth
Question 13.
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) narrow opening to the sea
Question 14.
The variety of coal which has the highest car-bon content
(a) Anthracite
(b) Peat
(c) Bituminous
(d) Lignite
Answer
(a) Anthracite
Question 15.
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) absence of air
Question 16.
Which of the following is not a bio mass energy source?
(a) gobar gas
(b) coal
(c) wood
(d) nuclear energy
Answer
(d) nuclear energy
Question 17.
The main constituent of CNG is
(a) butane
(b) methane
(c) ethane
(d) propane
Answer
(b) methane
Question 18.
Hydropower plant are located in the
(a) desert area
(b) plane area
(c) hilly terrains
(d) None of the above
Answer
(c) hilly terrains
Question 19.
The use of reflector in the solar cooker is to
(a) Decrease efficiency
(b) create green house effect
(c) increase efficiency
(d) None of the above
Answer
(c) increase efficiency
Question 20.
Solar cells are made of
(a) metals
(b) insulator
(c) semi conductors
(d) None of these
Answer
(a) Seine conductors
Question 21.
A solar cooker may not cook food if.
(a) Interior of the box and the container of food are perfectly shining.
(b) Glass sheet over the box is not closed.
(c) Solar cooker is placed in the shade.
(d) All the above
Answer
(d) All the above
Question 22.
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 the above
Answer
(d) All of the above
Question 23.
Assertion: Wind energy farms cannot be established every where.
Reason: The wind energy farms can be established only at those places where wind blows for most part of the year.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(a) Both A and R are true and R is the correct explanation of A.
Question 24.
Assertion: Coke is a better fuel than coal.
Reason: Burning of coke cause air pollution.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
Answer
(c) A is true but R is false.
Question 25.
Unit of calorific value of a substance is
(a) Kcal
(b) Joules
(c) J kg
(d) J/kg
Answer
(d) J/kg
Question 26.
The material used for interconnection the solar cells in the solar panel is
(a) silicon
(b) silver
(c) aluminium
(d) copper
Answer
(b) silver
Question 27.
A solar panel is made by combining in an arrangement
(a) solar concentrator
(b) solar cookers
(c) solar cells
(d) solar chimney
Answer
(c) solar cells
Question 28.
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) ocean in the form of tidal waves
Question 29.
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) disposing off spent fuel easily.
Question 30.
Which of the following is not an example of a bio-mass energy?
(a) wood
(b) gobar-gas
(c) nuclear energy
(d) coal
Answer
(c) nuclear energy
Question 31.
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) a cloudy day
Question 32.
Which of the following gases is the main con-stituent of natural gas?
(a) Methane
(b) Ethane
(c) Propane
(d) Butane
Answer
(a) Methane
Question 33.
Which of the following is the ultimate source of energy?
(a) Water
(b) Sun
(c) Fossil fuels
(d) Uranium
Answer
(b) Sun
Question 34.
Major problem in harnessing nuclear energy is to
(a) split heavy nucleus
(b) sustain nuclear reactions
(c) Convert nuclear energy into electricity
(d) dispose off spent fuel safety.
Answer
(d) dispose off spent fuel safety.
Question 35.
Which of following is more environment friendly?
(a) Burning of coal
(b) burning of fire wood
(c) burning of charcoal
(d) Burning of diesel.
Answer
(c) burning of charcoal
Question 36.
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) low energy protons only
Question 37.
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) anaerobic bectria
Question 38.
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 the above
Answer
(d) All of the above
Question 39.
The temperature inside the solar cooker ranges from
(a) 500-100°C
(b) 100-140°C
(c) 150-200°C
(d) 70-80°C
Answer
(b) 100-140°C
Question 40.
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) Availability of water
Question 41.
Wind is caused due to
(a) uneven heating of earth’s surface
(b) rotation of earth
(c) local conditions
(d) All of the above
Answer
(d) All of the above
Question 42.
Solar cells are made of
(a) germanium
(b) silicon
(c) silver
(d) aluminium
Answer
(b) silicon
Question 43.
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
Answer
(d) All of the above
Question 44.
An ideal source of energy should have
(a) higher calorific value
(b) easy transportability
(c) easy accessibility
(d) All the above
Answer
(d) All the above
Question 45.
Radiations which are harmful to the living organisms are
(a) Infrared radiation.
(b) ultraviolet radiations
(c) Visible radiation.
(d) micro waves
Answer
(b) ultraviolet radiations
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