Tag: management of natural resources
Questions Related to management of natural resources
Which among the following is known as land of windmills?
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Netherlands
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Cathopia
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Japan
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USA
Wind energy is an _____ energy resource
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Inexhaustible
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Exhaustible
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Both A and B
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None of the above
Wind energy is an inexhaustible energy resource which has been used for centuries to ran wind mills and pump water.
Geothermal energy is used to obtain electricity in
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Tamil Nadu
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Bihar
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Himachal Pradesh
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Rajasthan
In some places, the hot water comes to the earth surface as hot spring which can be used to generate electricity. In Himachal Pradesh, electricity is generated by this method.
Which technology is used to harvest solar energy from the sun?
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Artificial photosynthesis
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Photovoltaics
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Solar heating
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All of the above
Biogas can be a good substitute for
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Fuel gas
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Petroleum and oil
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Coal
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Charcoal
Which of the following yields more energy?
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Direct burning of cow dung
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Burning of biogas derived from cow dung
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Burning of manure derived from cow dung
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Burning of semi-decayed cow dung
Biogas plant is more useful than burning of dung cakes because
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It is non-pollutant.
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It yields manure as well as fuel gas.
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It yields important biochemicals.
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Both A and B.
Types of bioenergy are
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Biomass
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Biofuel
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Biogas
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All of the above
- Biomass is the amount of organic matter present in an organism at a given time. It is the stored form of energy in an organism.
- Biofuel is any substance which has a biological origin and can be used as a fuel. For example, fuel wood.
- Biogas is formed from the decomposition of organic matter and can be used as an alternative source of energy in place of fossil fuels.
Biogas predominantly comprises
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$CH _4, N _2$ and $H _2$
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$CH _4$ and CO
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$CH _4$ and $CO _2$
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$CH _4$ and $NO _3$
Biogas contains
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$50-70\%$ methane
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$30-40\%$ methane
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Traces of methane
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$80-95\%$ ethane
- Methane 50- 75%
- Carbon dioxide 25- 35%
- Hydrogen 0 -1%