Tag: sources of water
Questions Related to sources of water
The use of CFL can save .......... electricity per year.
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1000 megawatt
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6000 megawatts
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100 megawatt
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None of the above
Compact fluorescent lamps (CFL) are the bulbs which are generally used to save the electricity. These bulbs use and convert only 1/5$^{th}$ of the electricity into light. There is consumption of less electricity. This helps in reduction of about 6000 megawatts of electricity per year.
Which one of the following is an example of non-renewable resources?
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Water
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Wind
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Vegetation
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Coal and minerals
Nonrenewable resources are resources that are not easily replenished by the environment. Thus coal and minerals are examples of non renewable resources.
Which of the following energy is better than solar energy?
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Atomic energy
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Wind energy
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Energy from fossil fuel
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None of the above
De-dust lighting fixture is used
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To maintain illumination
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To increase energy efficiency
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To remove dust from bulb
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None of the above
Which of the following has the largest wind energy farm in India?
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Karnataka
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Madhya Pradesh
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Tamilnadu
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Kerala
India is ranked 5th largest wind producing country in the world. The largest wind energy farm is in Muppandal, Tamilnadu having the capacity of 1500MW wind production. So, the correct option is C.
CFL is
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Chlorofluoro lamp
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Compact fluorescent lamp
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Compact fluorescent light
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Both B and C
CFL is compact fluorescent light. Compact fluorescent light bulbs are used in place of incandescent bulb because they use about 1/7$^{th}$ of the power used by the incandescent bulb. Hence, they are highly efficient in saving electricity.
Energy source which do not evolve CO$ _2$ is
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Oil
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Coke
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Nuclear energy
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Other organic substances
Oil is a mixture of molecules that mainly contain carbon and hydrogen. When it burns it also produces CO$ _2$, but 25% less than coal for the same amount of energy (because the combustion of hydrogen gives energy but generates only water).
Which of the following is the best choice for energy production?
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Hydrogen
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Solar system
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Windmill
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All of the above
Energy generated by using wind, hydrogen, tides, solar, geothermal heat, and biomass is known as non-conventional energy. These are the inexhaustible non-conventional resource. Hence, these are the best choice for energy production.
The economically friendly measure to conserve solar energy is
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Sugarcane plantation
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Energy plantation
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Both (A) and (B)
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None of the above
Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. Photosynthesis in green plants harnesses the energy of sunlight to convert carbon dioxide, water, and minerals into organic compounds and gaseous oxygen. Hence, planting green trees is an easy way to conserve solar energy.
Amazon rainforests are considered as 'lungs of the planet' as they contribute ________ of the total oxygen in the earth's atmosphere.
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10%
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15%
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20%
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30%
About 20% of the world oxygen is produced in the rainforests. amazon They are described as the 'lungs of the planet' because they provide the essential world environmental service of continuously recycling $CO _$ into $O _2$.