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315
What substance is obtained as a residue when wood is burned in a limited supply of air?
By Satkriti Roao, 4 years ago
replies 1
0
1
166
Solar cells are used to provide the electric current to charge the batteries of a car driv...
By Satkriti Roao, 4 years ago
replies 1
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153
In many applications, solar cells are connected to rechargeable batteries. Why is this so?
By Satkriti Roao, 4 years ago
replies 1
0
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458
In a solar water heater, why is the storage tank placed at a higher level than the solar p...
By Satkriti Roao, 4 years ago
replies 1
0
1
393
A large coal-fired power station produces 2000 MW of electrical energy. A wind turbine wit...
By Satkriti Roao, 4 years ago
replies 1
0
1
470
(a) State two advantages of using wind energy for generating electricity. (b) Mention two ...
By Satkriti Roao, 4 years ago
replies 1
0
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475
What is wind? What type of energy is possessed by wind? (b) Explain how, wind energy can b...
By Satkriti Roao, 4 years ago
replies 1
0
1
384
(a) With the help of a labelled diagram, explain the construction and working of a solar c...
By Satkriti Roao, 4 years ago
replies 1
0
1
331
(a) State two advantages of producing hydroelectricity. (b) State two disadvantages of pro...
By Satkriti Roao, 4 years ago
replies 1
0
1
395
What is hydroelectricity? Explain the basic principle of generation of hydroelectricity wi...
By Satkriti Roao, 4 years ago
replies 1
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