SOURCES OF ENERGY .

PRACTICE PAPER

SUB: NATURAL RESOURCES (2020)
CLASS X                                   SOURCES OF ENERGY                                                      

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I. Very short answer type questions:                    

1. Name one fuel used in nuclear reactor.
2. Define solar panel.
3. List any two limitations on harnessing wind energy.
4. Name two combustible components of biogas.
5. A black surface absorbs more heat radiation as compared to a white or a reflecting surface under identical conditions. List two solar devices that make use of this property in their design.
6. A student constructed a box-type solar cooker and convert it with the glass plate.
7. Mention the purpose of blackening the interior of a solar cooker.
8.  Mention two different ways of harnessing energy from the ocean.
9. Name an efficient fuel obtained from cow dung and other animal and plant wastes. Also, mention its main constituent.
10. Name the two major components present in the leftover slurry of a biogas plant. 
11. Why is the outer surface of a solar cooker black? And name one more such devices.
12. Name any two elements that are used in fabricating solar cells.
13. Name the reaction responsible for large energy produced in the sun.
14. Mention the main purpose of using a plane mirror in the solar cooker.
15. Write the purpose served by a glass plate in the cooker.
16. List two forms of energy in which solar energy manifests itself in the ocean.
17. List two characteristics of a good source of energy.
18. State the necessary conditions to operate an Ocean thermal energy conversion plant.
19. List to indirect ways of using solar energy.
20. State the transformation of energy taking place in a solar cell panel.
21. Write the full form of CNG. What are the two disadvantages of burning fossil fuels?
22. Write the sequence of events taking place in a biogas plant.
23. Mention any two limitations of using fossil fuels.

II. Short answer type questions: 

1.  Hydrogen is used as rocket fuel. Why? Is it a clean fuel than CNG? Why or why not?
2. Give two advantages of using nuclear energy.
3. Name the major constituent of biogas.
4. List two reasons which limit the uses of solar cell for harnessing energy for domestic use.
5. List any four qualities of an ideal source of energy.
6. Biogas is considered to be a boon to the farmer. Give reasons.
7. List two limitations of using a solar cooker.
8. What is a nuclear fusion reaction? List any two advantages of nuclear fusion reactions.
9. Large scale use of nuclear energy becomes prohibited due to some hazards. State any two measures hazards associated with a nuclear power plant.
10. A student constructed a model of box-type solar cooker. He used a transparent plastic sheet to cover the open face of the box. He found that this cooker does not function well. What could be the possible drawback in his model? List any four drawbacks.
11. List four gases generated in a biogas plant.
12. List three characteristics to prove it as an excellent fuel.
13. List any four reasons why we need to look for alternative sources of energy.
14. Name any two elements that are used for making solar cell panels.
15. Why is charcoal considered to be a better fuel than wood? 
16. List any two disadvantages of using fossil fuel.

III. Long answer type questions: 

1. List two ways in which animal dungs can be utilized as a fuel. Out of these two which one do you think is better? Justify your answer.
2. Explain Ocean Thermal Energy and how can it be organized Mention any two limitations in obtaining the energy from the oceans.
3. Explain the principle and working of a biogas plant.
4. Explain geothermal energy. How can it be harnessed to produce electrical energy?
5. Energy can neither be created nor be destroyed. In the context of this statement explain, why do we talk about the energy crisis?
6. List in tabular form to distinguishing features between renewable and nonrenewable sources of energy. Give two examples of each.
7. Draw a geometric level diagram of a box-type solar cooker. Name two components of the solar cooker which are responsible to increase the temperature inside the Solar Cooker. Explain their function.
8. I. Name the device used to convert(a) Solar energy into heat(b) Solar energy into electricity II.Mention two limitations of solar energy.
9. Mention why is it not possible to make use of solar cells to meet all our energy needs. State three reasons to support your answer.
10. Name the process by which nuclear energy is generated and also name one substance used for it. Give two advantages and to Hazards of nuclear energy.
11. List any two criteria for selecting good fuel.
12. Explain how does burning of fossil fuels cause air and soil pollution.
13. Describe how hydropower plant produces electricity is.
14. Write any two advantages of hydroelectric energy.
15. What is a solar cell? Why and how is a solar cell application and panel prepared? List two limitations of these panels.
16. How can geothermal energy be used commercially?
17. List in tabular form 3 distinguishing features between a thermal power plant and geothermal power plant.
18. Out of the two elements A and B with mass numbers 2 and 235 respectively, which one is suitable for making(a) a nuclear reactor (b) a hydrogen bomb. Name the nuclear reaction in each case. Write one difference between the two types of nuclear reactions.
19. It has been observed that the construction of big dams has certain problems associated with them. List three problems.
20. Describe how hydrogen energy can be converted into electrical energy. Write any two limitations of hydrogen energy.
21.  Draw a neat diagram of biogas plant and label 
22. (a) inlet of slurry (b) digester and(c) gas outlet.
23. List three factors responsible for the wind. State three limitations in harnessing wind energy.
24. State the energy transformation taking place at hydropower plants. List two advantages of the setting of hydropower plants.

                                                  

Chapter 1 - Chemical Reactions and  Equations	Quick View	Questions with Solutions
Chapter 2 - Acid, Bases and Salt	Quick View	Questions with Solutions
Chapter 3 - Metal and Non-metals	Quick View	Questions with Solutions
Chapter 4 - Carbon and it's compound	Quick View	Questions with Solutions
Chapter 5 - Periodic Classification of Elements	Quick View	Questions with Solutions
Chapter 6 - Life Processes	Quick View	Questions with Solutions
Chapter 7 - Control and Co-ordination	Quick View	Questions with Solutions
Chapter 8 - How do Organisms Reproduce?	Quick View	Questions with Solutions
Chapter 9 -  Health and Heredity	Quick View
Chapter 10 -  Reflection and Refraction	Quick View	Questions with Solutions
Chapter 11 -  Human Eye Colourful World	Quick View	Questions with Solutions
Chapter 12 -  Electricity	Quick View	Questions with Solutions
Chapter 13 -  Magnetic Effect of Electric Current	Quick View	Questions with Solutions
Chapter 14 -  Sources of Energy	Quick View	Questions with Solutions
Chapter 15  - Our Environment	Quick View
Chapter 16 - Management of  Natural  Resources	Quick View