Chapter 14
Sources of Energy
MCQs
Q 1.: Which process explains the energy extraction from a sea wave?
(A) Using kinetic energy of the waves to produce electricity
(B) Using thermal energy of the waves to produce electricity
(C) Using chemical energy of the waves to generate electricity
(D) Using electrical energy of the waves to generate electricity
Option – A
Q 2.: A student studies that biogas contains a large amount of methane which can be used as a fuel for various uses. It burns without releasing smoke and leaving no residue like ash in other fossil fuel. Should biomass be considered a ‘good’ or ‘bad’ source of energy?
(A) Bad, as it does not release smoke
(B) Good, as it produces methane gas
(C) Bad, as it burns without releasing smoke
(D) Good, as it does not cause any harm to the environment
Option – D
Q 3.: Why is wind energy considered as a conventional source of energy?
(A) As it can rotate a windmill
(B) As it can help in lifting water
(C) As it is readily available and used for a long time
(D) As it produced due to uneven heating of the Earth
Option – C
Q 4.: Why is biogas considered as a ‘good’ source of energy?
(A) As it produces ashes
(B) As it produces methane
(C) As it burns without releasing smoke
(D) As it decomposes in the absence of oxygen
Option – C
Q 5.: Thermal power plant is considered as a bad source of energy. Why?
(A) As it uses very less amount of fossil fuels
(B) As burning of fossil fuel releases harmful gases
(C) As electricity is harmful and pollutes the environment
(D) As thermal power plants produce less amount of electricity
Option – B
Q 6.: Which of these processes explains the working of a geothermal power plant?
(A) Use of potential energy to produce electricity
(B) Use of thermal energy to produce electricity
(C) Use of kinetic energy to produce electricity
(D) Use of tidal energy to produce electricity
Option – B
Q 7.: Which of these processes explains the extraction of the sun’s energy to generate energy to light a bulb?
(A) Conversion of electric energy into solar energy
(B) Conversion of solar energy into electric energy
(C) Conversion of solar energy into kinetic energy
(D) Conversion of kinetic energy into solar energy
Option – B
Q 8.: Which of these characteristics can help us recognize a good source of fuel?
(A) Physical state
(B) Availability in all regions
(C) Cost effective for all countries
(D) Produces large amount of energy
Option – D
Q 9.: Which is the ultimate source of energy?
(A) Water
(B) Sun
(C) Uranium
(D) Fossil fuels
Option – B
Q 10.: 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
Option – C
Q 11.: 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
Option – B
Q 12.: 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
Option – C
Q 13.: Which part of the solar cooker is responsible for greenhouse effect?
(A) Coating with black colour inside the box
(B) Glass sheet
(C) Mirror
(D) Outer cover of the solar cooker
Option – B
Q 14.: The main constituent of biogas is
(A) Methane
(B) Carbon dioxide
(C) Hydrogen
(D) Hydrogen sulphide
Option – A
Q 15.: 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
Option – C
Q 16.: 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
Option – B
Q 17.: 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
Option – A
Q 18.: Which method is used to produce electricity in hydroelectric power plant?
(A) By boiling the water to produce steam
(B) By ionizing water
(C) By running dynamo by kinetic energy
(D) Any of these
Option – C
Q 19.: Which of the given is the odd one out?
(A) Petroleum
(B) Hydro electricity
(C) Coal
(D) CNG
Option – B
Q 20.:Which of the given produces energy because of temperature difference at various levels in ocean?
(A) Tidal energy
(B) Wave energy
(C) Solar energy
(D) Ocean thermal energy
Option – D
Q 21.: Which energy source is the largest source used in India?
(A) CNG
(B) LPG
(C) Coal
(D) Bio gas
Option – B
Q 22.: Acid rain happens because
(A) Sun leads to heating of the upper layer of 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) The earth atmosphere contains acids
Option – B
Q 23.: Fuel used in thermal power plants is
(A) Water
(B) Uranium
(C) Biomass
(D) Fossil fuels
Option – D
Q 24.: Which of the given is not the conventional sources of energy
(A) Fossil fuels
(B) Biomass
(C) Solar energy
(D) Vegetable wastes
Option – C
Q 25.: The gaseous fuel which has the highest calorific value is
(A) Hydrogen
(B) Methane
(C) LPG
(D) Biogas
Option – A
Q 26.: Fission of radioactive substances is known as
(A) Nuclear blast
(B) Nuclear energy
(C) Nucleolus energy
(D) Source energy
Option – B
Q 27.: Quality of fuel is measured by
(A) Calorific value
(B) Combustion value
(C) Initial value
(D) None of these
Option – A
Q 28.: Thermal power plants uses………………And…………….. to produce thermal electricity.
(A) Coal, Petroleum and natural gas
(B) CNG, LPG and natural gas
(C) Coal, CNG and non-natural gas
(D) None of these
Option – A
Q 29.: Green house effect is caused by gases like
(A) Helium
(B) Oxygen
(C) Nitrogen
(D) Carbon dioxide
Option – D
Q 30.: A solar water heater cannot be used to get hot water on
(A) A sunny day
(B) A cloudy day
(C) Night
(D) Both ‘B’ and ‘C’
Option – D
Q 31.: Chief constituent of natural gas is:
(A) Methane
(B) Ethane
(C) Butane
(D) Propane
Option – A
Q 32.: The power plant which converts potential energy of falling water into electricity is
(A) Nuclear plant
(B) Thermal plant
(C) Hydro power plant
(D) Wind plant
Option – C
Q 33.: Wood is a………
(A) Primary fuel
(B) Secondary fuel
(C) Liquid fuel
(D) Processed fuel
Option – A
Q 34.: The popular name of bio-gas is
(A) Gobar gas
(B) Marsh gas
(C) Ethane gas
(D) Helium gas
Option – A
Q 35.: Which country is known as the “country of winds”?
(A) India
(B) China
(C) Denmark
(D) Netherlands
Option – C
Q 36.: Which state produces the largest amount of wind energy in India?
(A) Maharashtra
(B) Karnataka
(C) Punjab
(D) Tamil Nadu
Option – D
Q 37.: Which of these is a renewable source of energy?
(A) Solar energy
(B) Hydro energy
(C) Wind energy
(D) All of these
Option – D
Q 38.: 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
Option – C
Q 39.: 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 burns and leaves no residue
(D) Biogas is used as a fuel for cooking only whereas dung cake can be used for cooking, illuminant the lanterns.
Option – C
Q 40.: Which of the following organism produces biogas from cow drug sherry in the biogas plant?
(A) Aerobic bacteria
(B) Anaerobic bacteria
(C) Protozoa
(D) Fungi
Option – B