Please refer to CBSE Class 10 Science HOTs Question Sources Of Energy. Download HOTS questions and answers for Class 10 Science. Read CBSE Class 10 Science HOTs for Chapter 14 Sources of Energy below and download in pdf. High Order Thinking Skills questions come in exams for Science in Class 10 and if prepared properly can help you to score more marks. You can refer to more chapter wise Class 10 Science HOTS Questions with solutions and also get latest topic wise important study material as per NCERT book for Class 10 Science and all other subjects for free on Studiestoday designed as per latest CBSE, NCERT and KVS syllabus and pattern for Class 10
Chapter 14 Sources of Energy Class 10 Science HOTS
Class 10 Science students should refer to the following high order thinking skills questions with answers for Chapter 14 Sources of Energy in Class 10. These HOTS questions with answers for Class 10 Science will come in exams and help you to score good marks
HOTS Questions Chapter 14 Sources of Energy Class 10 Science with Answers
(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
Question. Choose the correct statement
(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
Question. 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
Answer : D
Question. The variety of coal which has the highest car-bon content
(a) Anthracite
(b) Peat
(c) Bituminous
(d) Lignite
Answer : A
Question. 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
Question. Which part of the solar cooker is responsible for green house effect?
(a) Coating with black colour inside the box
(b) Mirror
(c) Glass sheet
(d) Outer cover of the solar cooker
Answer : C
Question. Which of the following is the ultimate source of energy?
(a) Water
(b) Sun
(c) Fossil fuels
(d) Uranium
Answer : B
(a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion.
(b) The Assertion and the Reason are . correct but the Reason is not the correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) The statement of the Assertion is false but the Reason is true.
Question. 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.
Answer : A
Question. Assertion: Coke is a better fuel than coal.
Reason: Burning of coke cause air pollution.
Answer : C
Question. Assertion: Non-conventional sources of energy are the major source of energy for generating electricity in power plants.
Reason: Coal and petroleum are non- conventional energy sources.
Answer : D
Question. 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.
Answer : B
Question. 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.
Answer : C
True and False :
Question. The use of turbine is essential for the production of electrical energy.
Answer: True
Question. The approximate percentage of energy met by India with the use of hydel energy is 25%.
Answer: True
Question. Windmills require giant structural erection and vast space.
Answer: True
Question. New Zealand is called as “Country of Winds”.
Answer: False
Question. Fossil fuels do not cause pollution.
Answer: True
Question. Acid rain is formed by acidic oxides of carbon, sulphur and nitrogen.
Answer: True
Match Column I with Column II.
Question. Column I Column II
(a) Fossil fuels (i) Renewable
(b) Silicon (ii) Electrical energy
(c) Geothermal energy (iii) Depleting
(d) Turbine (iv) Solar cells Answer/Explanation
Answer:
(a) (iii)
(b) (iv)
(c) (i)
(d) (ii)
Question. Column I Column II
(a) Black surface (i) Water heaters
(b) Turbine (ii) Solar cell
(c) Semi conductors (iii) Generators
(d) Digestor (iv) Bio gas Answer/Explanation
Answer:
(a) (i)
(b) (iii)
(c) (ii)
(d) (iv)
Important Questions for NCERT Class 10 Science Sources of Energy
Very Short Answer type Questions :
Question. Define source of energy.
Answer: A source of energy is one which can provide sufficient amount of energy in convenient manner over a long period of time.
Question. What is the minimum speed of wind to run a windmill to maintain the necessary speed of turbine of an electric generator?
Answer: 15 km/h.
Question. How do satellites get energy to operate all the devices ?
Answer: From solar energy conversion using solar cell panels.
Question. Which of the following power plants to produce electricity involves more running expenses and why? Thermal power station, hydro power station, an array of solar panel, wind energy farm or geothermal source.
Answer: Thermal power stations involve more running cost due to continuous use of coal.
Question. Name a device which can be used for cooking so as to save fuel.
Answer: Solar cooker.
Question. If you could use any source of energy for heating your food which one would you prefer? State one reason for your choice.
Answer: LPG because it does not leave any residue on burning.
Question. What do you mean by the term ‘thermal power plant’?
Answer: Thermal power plant is the power plant where coal is burnt to produce heat energy which is converted into electrical energy.
Question. Bio-gas is also known as gobar gas. Justify.
Answer: Starting material for biogas is mainly cow-dung. So, it is also known as gobar gas.
Question. What is acid rain?
Answer: The rain containing the acidic oxides such as oxides of carbon and traces of nitrogen and sulphur.
Question. Name the kind of energy possessed by wind and the device used to harness it.
Answer: Kinetic energy, wind mill.
HOTS Questions and Answers
Q.1.The cost of production of electricity in a thermal power station located in Bihar/Jharkhand/Orissa is less than in Gujarat/Maharashtra.Do you agree? Justify your answer.
Ans.1 It is because coal is available in Bihar/Jharkhand/Orissa locally, whereas it has to be transported for any thermal power plant in Gujarat/Maharashtra.
Q.2 Which of the following sources of electricity involves more running expenses and why? Thermal power station, Hydro power station, solar cells or Geothermal source.
Ans.2 Thermal power stations involve more running cost due to continuous use of coal.
Q.3 Why is there so much emphasis on changing over from petrol/diesel driven automobiles to CNG-driven vehicles?
Ans.3 CNG on burning produces only carbon dioxide and water -It does not produce smoke. -It does not leave unburnt hydrocarbons, lead particulates etc.
Q.4 Which of the following is not an example of the biomass energy source?
(a) Wood,(b) gobar gas,(c) atomic energy,(d)coal.
Ans.4 Atomic energy is not an example of biomass energy source.
Q.5 How is the supply of electricity maintained in a windmill when there is no wind? In a solar panel when there is no sun?
Ans.5 In both the cases, the electricity generated is stored in a battery. This battery provides electricity when there is no wind in the case of a windmill and no sun in the case of a solar panel.
Q.6 Can any source of energy be pollution-free? Why or why not?
Ans. 6 No source of energy can be called pollution-free, because the use of any source of energy disturbs the environment in one way or the other. The actual source of energy may be pollution-free,but the assembly of the device might have caused some damage to the environment. So, in absolute sense, no source of energy can be called pollution-free.
Q.7 Why is biogas a better fuel than animal dung-cakes?
Ans. 7 Biogas is a better fuel than animal dung-cakes because-
(a) Burning of animal dung-cakes produces lot of pollution whereas biogas is a smokeless fuel.
(b) The calorific value of Biogas is much higher than that of animal dung-cakes.
(c) Animal dung cakes leaves residue after burning whereas biogas leaves no residue.
Q.8 Though a hot iron emits radiation, yet it is not visible in the dark, why?
Ans. 8 Hot iron emits infra-red rays and these are not visible to our eyes.
Q.9 Define: OTE (ocean thermal energy).
Ans. 9 The energy available due to the difference in the temperature of water at the surface of the ocean and at deeper levels is called OTE.
Q.10 H2 has been used as a rocket fuel. Would you consider it as a cleaner fuel than CNG? Why or why not?
Ans. 10 H2 when burnt in presence of O2 produces H2O as the only product with release of lot of heat energy. Water does not cause any damage to environment while CNG during burning produces CO2 and water. CO2 is not a pollutant yet it leads to rise in the temperature (global warming), this rise is called green house effect and this will affect polar ice, and life on the earth is at risk. Thus, H2 is a cleaner fuel than CNG.
More Questions for Practice
Q1. Name the components of bio-gas.
Q2.What are hot spots?
Q3. What is the product obtained when wood is burnt without much supply of oxygen?
Q4. List problems associated with construction of dam?
Q5. What is the basis of nuclear energy? Explain briefly.
Q6. “It was believed nuclear energy is only destructive’’ do you agree? Justify your answer.
Q7. List the criteria for selecting a good fuel.
Q8. What is bio-mass?
Q9. Name the process that converts solar energy into chemical energy in nature.
Q10. Biogas is considered to be a boon to the farmers. Give reason.
Fill in the Blanks :
Question. In the wind energy farms, the wind speed should be higher than ………. to maintain the required speed of the turbine.
Answer: 15 km/h
Question. ______________ reaction is more powerful than a fission reaction.
Answer: Fusion
Question. Biogas is an excellent fuel as it contains 75% ………. along with other gases like ………., ………. and ………. .
Answer: methane, carbon dioxide, hydrogen and hydrogen sulphide
Question. Mirrors used for solar cooker are ______________ .
Answer: convex
Question. Ocean thermal energy is used to boil ______________ before running the turbine.
Answer: Ammonia
Question. The energy available due to the difference in the temperature of water at the surface of the ocean and at deeper levels is called ………. .
Answer: Ocean thermal energy
Important Questions for NCERT Class 10 Science Sources of Energy
Very Short Answer type Questions :
Question. Name the place in India where the largest wind energy farm has been established and how much electricity does it generate?
Answer: It is established near Kanyakumari is Tamil Nadu and it generates 380 MW of electricity.
Question. Why the dams for generating hydroelectricity can be built only in the hilly areas or at the foothill?
Answer: It is because to generate hydroelectricity water can fall from a considerable height.
Question. The cost of production of electricity in a thermal power station located in Bihar/ Jharkhand/Orissa is lesser than in Gujarat/ Maharashtra. Do you agree? Justify your answer.
Answer: Yes, it is because in Bihar/Jharkhand/Orissa, coal for thermal power plant is locally available whereas it has to be transported for any thermal power plant to be located in Gujrat/Maharashtra.
Question. Write the energy conversion that takes place in a hydropower plant.
Answer: The energy transformation taking place at hydropower plants is shown below:
Question. List two non-conventional source of energy.
Answer: Geothermal, solar, biomass, water, wind are the non-convention source of energy,
Question. Name the main component of solar cell.
Answer: Solar cell consists of different thin layers of silicon.
Question. Name the microorganism which decompose slurry into biogas.
Answer: Anaerobic bacteria.
Question. List two nutrients that the slurry left behind in the biogas plant contain.
Answer: Nitrogen and phosphorous.
Question. Which metal is used to connect various solar cells?
Answer: Silver.
Question. Why are the coal, petroleum and natural gas called fossil fuels?
Answer: Coal, petroleum and natural gas, the common sources of energy, being organic (biotic) in their origin and formed over a long period of time are called fossil fuels.
Question. Name the part of a biogas plant where reactions take place in the absence of oxygen.
Answer: Digester chamber.
Chap-1 Sources of energy
Question 1: Which part of the solar cooker is responsible for green house effect?
Answer: The glass sheet in the solar cooker creates a green house effect. Glass sheet has a property that allows the infrared rays of shorter wavelength from the sun to get in the device but does not allow the infrared rays of longer wavelength to leave the solar heating device. Therefore, heat energy is trapped inside the heating device.
Question 2: Though wood is a renewable source of energy but the use of wood as a fuel is not a wise decision. Explain.
Answer: Wood is renewable source of energy. It is obtained by cutting trees. A new plant sapling usually takes more than 15 years to grow and mature into a tree. Therefore replenishment of cut down trees take a very long time. It causes depletion of forest leading to imbalance in nature. Due to unsuitable layer and the above reasons, usage of wood is not a wise decision.
Question 3: Wavelength of radiation incident on a surface is 850 nm. Will the surface become visible when exposed to this radiation? Explain.
Answer: As we know the range of wavelength of visible radiation is from 400nm to 700nm. The radiation having wavelength greater than 700 nm is termed as infrared radiations which only produces warmth, so the wavelength of radiation 850nm cannot be visible
Revision Notes for Class 10 Physics Sources of Energy
CBSE Class 10 Science HOTs Chemical Reactions and Equations |
CBSE Class 10 Science HOTs Question Acids Bases And Salts |
CBSE Class 10 Science HOTs Metals and Non Metals |
CBSE Class 10 Science HOTs Question Carbon And its Compounds |
CBSE Class 10 Science HOTs Periodic Classification of Elements |
CBSE Class 10 Science HOTs Question Life Processes |
CBSE Class 10 Science HOTs Question Control And Coordination |
CBSE Class 10 Science HOTs Question How Do Organisms Reproduce |
CBSE Class 10 Science HOTs Question Heredity And Evolution |
CBSE Class 10 Science HOTs Reflection and Refraction |
CBSE Class 10 Science HOTs Question Human Eye and Colourful World |
CBSE Class 10 Physics HOTs Electricity |
CBSE Class 10 Science HOTs Magnetic Effects of Electric Current |
CBSE Class 10 Science HOTs Question Sources Of Energy |
CBSE Class 10 Science HOTs Question Our Environment |
CBSE Class 10 Science HOTs Question Management of Natural Resources |
CBSE Class 10 Science HOTs Question Bank |
CBSE Class 10 Science Chapter 14 Sources of Energy HOTS
We hope students liked the above HOTS for Chapter 14 Sources of Energy designed as per the latest syllabus for Class 10 Science released by CBSE. Students of Class 10 should download the High Order Thinking Skills Questions and Answers in Pdf format and practice the questions and solutions given in above Class 10 Science HOTS Questions on daily basis. All latest HOTS with answers have been developed for Science by referring to the most important and regularly asked topics that the students should learn and practice to get better score in school tests and examinations. Studiestoday is the best portal for Class 10 students to get all latest study material free of cost.
HOTS for Science CBSE Class 10 Chapter 14 Sources of Energy
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Chapter 14 Sources of Energy HOTS Science CBSE Class 10
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Chapter 14 Sources of Energy CBSE Class 10 HOTS Science
Regular HOTS practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Chapter 14 Sources of Energy concepts. HOTS play an important role in developing an understanding of Chapter 14 Sources of Energy in CBSE Class 10. Students can download and save or print all the HOTS, printable assignments, and practice sheets of the above chapter in Class 10 Science in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 10 Science MCQ Test for the same chapter
CBSE HOTS Science Class 10 Chapter 14 Sources of Energy
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