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प्रश्न
We read in newspapers that burning of fuels is a major cause of global warming. Explain why.
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उत्तर
Burning of fuels is a major cause of global warming because they produce a lot of greenhouse gas ‘carbon dioxide’ on burning. The earth’s atmosphere allows most of the sunlight that falls on it to pass through and heat the surface. But greenhouse gases such as carbon dioxide, methane, water vapours trap the heat radiated from earth. This leads to an increase in earth’s temperature. This is known as greenhouse effect. When concentration of greenhouse gases such as carbon dioxide increases, greenhouse effect also increases. This is known as global warming. It may cause melting of ice caps and glaciers resulting the rise in sea levels.
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संबंधित प्रश्न
Name the petroleum product used for surfacing of roads.
Process of separation of different constituents from petroleum is called ______.
Name a clean gaseous fuel other than LPG and natural gas.
Fill in the following blank with suitable word :
When a fuel burns in an insufficient supply of air, then some poisonous gas called ......... is also produced.
The poisonous gas which reduces the oxygen-carrying capacity of blood to a large extent is :
(a) SO2
(b) NO
(c) CO
(d) CO2
Match the following.
| Octane rating | Diesel |
| Cetane rating | Methane |
| Simplest hydrocarbon | Petrol |
| Peat | Bown in colour |
| Lignite | First stage coal |
Which of the following is not a constituent of petroleum?
You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?
The underlined word in the following sentence have been jumbled up. Write them in their correct form.
Keenrose is a fuel used in jet crafts.
Coal and petroleum are formed from the dead remains of organisms and are known as ______.
