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प्रश्न
Compare the sun and the fossil fuels as the sources of energy.
उत्तर
| Fossils fuels | The sun | |
| 1 | Fossils fuels are formed from the remains of dead plants and animals. | Inside the sun, nuclear fission occurs, which produces enormous amounts of heat. |
| 2 | The burning of fossil fuels causes air pollution. | The use of solar energy does not cause any air pollution. |
| 3 | Fossils fuel are non-renewable sources of energy. | Sunlight is a renewable source of energy. |
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संबंधित प्रश्न
Which of the following fuels has the highest calorific value?
(a) natural gas
(b) methane gas
(c) hydrogen gas
(d) biogas
Complete the following sentence:
Domestic gas cylinders like Indane contain mainly ..............
Write a short note on the pollution caused by burning fossil fuels.
The main constituent of petroleum gas is:
(a) methane
(b) ethane
(c) butane
(d) propane
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
What is meant by the renewable and non-renewable sources of energy? State two differences between them, giving two examples of each
Who is the odd one out?
What are the environmental consequences of using fossil fuels? Suggest the steps to minimise the pollution caused by various sources of energy including non-conventional sources of energy.
Fill in the blanks and complete the story.
About 300 million years ago, the earth had dense ______ in low lying wetland areas. Due to natural processes like ______ these forests got buried under the ______ As more ______ deposited over them, they were compressed. The ______ also rose as they sank deeper and deeper. Under high ______ and high ______ , dead plants got slowly converted into coal.
Why petrol is exhaustible natural resource whereas sunlight is not? Explain.
