Heat & Energy Exercise 6c
Please Select
Q1 State two characteristics which a source of energy must have
Solution :
Q2 Name the two groups in which various sources of energy are classified. State on what basis are they classified
Solution :
Q3 What is meant by renewable and non-renewable sources of energy? State two differences between them, giving two examples of each
Solution :
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Q4 Select the renewable and non-renewable sources of energy from the following:
(a) Coal
(b) Wood
(c) Water
(d) Diesel
(e) Wind
(f) Oil
Solution :
Q5 Why is the use of wood as a fuel is not advisable although wood is a renewable source of energy?
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Q6 Name five renewable and three non-renewable sources of energy
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Q7 State two characteristics which a source of energy must have
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Q8 What is (i) tidal, (ii) ocean and (iii) geo thermal energy? Explain in brief What is the main source of energy for the earth
Solution :
Q9 What is solar energy? How is solar energy used to generate electricity in a solar power plant?
Solution :
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Q10 What is a solar cell? State two uses of solar cells. State whether a solar cell produces a.c. or d.c. Give one disadvantage of using a solar cell
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Q11 State two advantages and two limitations of producing electricity from solar energy
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Q12 What is wind energy? How is wind energy used to produce electricity? How much electric power is generated in India using wind energy?
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Q13 State two advantages and two limitations of using wind energy for generating electricity
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Q14 What is hydro energy? Explain the principle of generating electricity from hydro energy.
How much hydro electric power is generated in India
Solution :
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Q15 State two advantages and two disadvantages of producing hydro-electricity
Solution :
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Q16 What is nuclear energy? Name the process used for producing electricity using the nuclear energy.
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Q17 What percentage of total electrical power generated in India is obtained from nuclear power plants? Name two places in India where electricity is generated from nuclear power plants?
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Q18 State two advantages and two disadvantages of using nuclear energy for producing electricity.
Solution :
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Q19 State the energy transformation in the following:
(i) Electricity is obtained from solar energy
(ii) Electricity is obtained from wind energy
(iii) Electricity is obtained from hydroelectricity
(iv) Electricity is obtained from nuclear electricity
Solution :
Q20 State four ways for the judicious use of energy.
Solution :
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Q21 What do you mean by the degradation of energy? Explain it by taking two examples of your daily life
Solution :
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Q22 The conversion of part of energy into an unuseful form of energy is called ______
Solution :
Multiple Choice Questions
Q1 The ultimate source of energy is:
(a) Wood
(b) Wind
(c) Water
(d) Sun
Solution :
Q2 Renewable source of energy is:
(a) Coal
(b) Fossil fuels
(c) Natural gas
(d) Sun
Solution :
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