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Chapters
2: Acids, Bases and Salts
3: Metals and Non-metals
4: Carbon and its Compounds
5: Periodic Classification of Elements
6: Life Processes
7: Control and Coordination
8: How do Organisms Reproduce?
9: Heredity and Evolution
10: Light – Reflection and Refraction
11: The Human Eye and the Colourful World
12: Electricity
13: Magnetic Effects of Electric Current
▶ 14: Sources of Energy
15: Our Environment
16: Management of Natural Resources
![NCERT Exemplar solutions for Science [English] Class 10 chapter 14 - Sources of Energy - Shaalaa.com](/images/science-english-class-10_6:5f2b1b2038084cf381bfa42c826a928c.jpg "NCERT Exemplar solutions for Science [English] Class 10 chapter 14 - Sources of Energy")
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Solutions for Chapter 14: Sources of Energy
Below listed, you can find solutions for Chapter 14 of CBSE NCERT Exemplar for Science [English] Class 10.
NCERT Exemplar solutions for Science [English] Class 10 14 Sources of Energy Multiple Choice Questions [Pages 102 - 104]
Which of the following is a non-renewable source of energy?
Wood
Sun
Fossil fuels
Wind
Acid rain happens because
sun leads to heating of upper layer of atmosphere
burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
electrical charges are produced due to friction amongst clouds
earth atmosphere contains acids
Fuel used in thermal power plants is
water
uranium
biomass
fossil fuels
In a hydro 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
Which is the ultimate source of energy?
Water
Sun
Uranium
Fossil fuels
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Nuclear energy
Thermal energy
Solar energy
Geothermal energy
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
The major problem in harnessing nuclear energy is how to
split nuclei?
sustain the reaction?
dispose off spent fuel safely?
convert nuclear energy into electrical energy?
Which part of the solar cooker is responsible for green house effect?
Coating with black colour inside the box
Mirror
Glass sheet
Outer cover of the solar cooker
The main constituent of biogas is
methane
carbon dioxide
hydrogen
hydrogen sulphide
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
Choose the correct statement
Sun can be taken as an inexhaustible source of energy
There is infinite storage of fossil fuel inside the earth
Hydro and wind energy plants are non polluting sources of energy
Waste from a nuclear power plant can be easily disposed off
In a hydroelectric power plant 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
Choose the incorrect statement regarding wind power
It is expected to harness wind power to minimum in open space
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
Choose the incorrect statement
We are encouraged to plant more trees so as to ensure clean environment and also provide bio-mass fuel
Gobar-gas is produced when crops, vegetable wastes etc., decompose in the absence of oxygen
The main ingredient of bio-gas is ethane and it gives a lot of smoke and also produces a lot of residual ash
Bio-mass is a renewable source of energy
NCERT Exemplar solutions for Science [English] Class 10 14 Sources of Energy Short Answer Questions [Pages 104 - 105]
Why is there a need to harness non-conventional sources of energy? Give two main reasons.
Write two different ways of harnessing energy from ocean.
What steps would you suggest to minimise environmental pollution caused by burning of fossil fuels?
What is the role of a plane mirror and a glass sheet in a solar cooker?
Mention three advantages of a solar cell?
What is biomass? What can be done to obtain bio-energy using biomass?
What are the limitations in obtaining energy from wind?
NCERT Exemplar solutions for Science [English] Class 10 14 Sources of Energy Long Answer Questions [Page 105]
Which is the process used to harness nuclear energy these days? Explain it briefly.
How can solar energy be harnessed? Mention any two limitations in using solar energy. How are these limitations overcome?
Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one nonconventional source of energy.
Why is there a need for harnessing non-conventional sources of energy? How can energy be harnessed from the sea in different ways?
What are the environmental consequences of using fossil fuels? Suggest the steps to minimise the pollution caused by various sources of energy including non-conventional sources of energy.
Energy from various sources is considered to have been derived from the sun. Do you agree? Justify your answer.
What is biomass? Explain the principle and working of a biogas plant using a labelled schematic diagram.
Solutions for 14: Sources of Energy
NCERT Exemplar solutions for Science [English] Class 10 chapter 14 - Sources of Energy
Shaalaa.com has the CBSE Mathematics Science [English] Class 10 CBSE solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. NCERT Exemplar solutions for Mathematics Science [English] Class 10 CBSE 14 (Sources of Energy) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. NCERT Exemplar textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 10 chapter 14 Sources of Energy are Source of Energy, Conventional energy resources or non-renewable energy resources, Fossil Fuels, Bio-energy, Solar Energy Devices, Energy from the Sea, Geothermal Energy, Power Plants Based on Nuclear Energy, Nuclear Fission, Forms of Energy, Environmental Consequences, How Long Will an Energy Source Last Us?.
Using NCERT Exemplar Science [English] Class 10 solutions Sources of Energy exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in NCERT Exemplar Solutions are essential questions that can be asked in the final exam. Maximum CBSE Science [English] Class 10 students prefer NCERT Exemplar Textbook Solutions to score more in exams.
Get the free view of Chapter 14, Sources of Energy Science [English] Class 10 additional questions for Mathematics Science [English] Class 10 CBSE, and you can use Shaalaa.com to keep it handy for your exam preparation.
