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प्रश्न
Why are fossil fuels called non-renewable sources of energy?
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उत्तर
Fossil fuels (coal, petrol, diesel etc.) are exhaustible i.e. if these are once finished can not be regenerated over a reasonable period of time. That is why fossil fuels are called non-renewable sources of energy.
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संबंधित प्रश्न
Why are we looking at alternate sources of energy?
Give the names of two energy sources that you would consider to be exhaustible. Give reasons for your choices.
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
Name the substance X.
Compare the sun and the fossil fuels as the sources of energy.
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
Choose the correct answer.
Windmills have been used for many centuries in
What are renewable energy resources?
Describe the four major types of coal.
Coal is one of the ______ used to cook food.
