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प्रश्न
Name the constituents of biogas.
उत्तर
The constituents of biogas are the following.
1. Methane
2. Carbon dioxide
3. Hydrogen
4. Hydrogen sulphide
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संबंधित प्रश्न
The fuel which is not obtained from biomass is:
(a) firewood
(b) cow-dung cakes
(c) coke
(d) charcoal
State whether the following is True or False.
Coal takes millions of years to form.
State whether the following is True or False.
The Sardar Sarovar Dam is built on the river Narmada.
Explain why is it no wise to regard wood as a renewable sources of energy.
Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilisation?
Make a list of conventional and non-conventional sources of energy. Give a brief description of harnessing one nonconventional source of energy.
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.
Which of the following is a pair of exhaustible natural resources?
Write True/False against the following statement.
Oxygen in air is an exhaustible natural resource.
Complete the crossword in figure with the help of the clues :
Across
1. Fuels obtained from dead remains of living organisms. (6, 5)
2. A process by which the various constituents of petroleum are separated. (8)
3. A porous black substance obtained from coal. (4)
4. Another name for motor fuel. (6)
Down
5. The substance obtained by carbonisation. (4)
6. Fuel for heavy motor vehicles. (6)
7. A petroleum product used for road surfacing. (7)
8. Dead remains of sea animals got converted into it. (9)
