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CBSE Questions for Class 10 Physics Sources Of Energy Quiz 11 - MCQExams.com
CBSE
Class 10 Physics
Sources Of Energy
Quiz 11
________________ do not require oxygen to decompose or break down complex compounds of the cow-dung slurry.
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Aerobic micro-organisms
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Anaerobic micro-organisms
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Both
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None
Explanation
Anaerobic micro-organisms do not require oxygen to decompose or break down complex compounds of the cow-dung slurry.
In bio gas plant It takes a few days for the anaerobic decomposition process to be complete and generate gases like methane, carbon dioxide, hydrogen and hydrogen sulphide.Methane is used for energy purposes by combustion.
The largest wind energy farm has been established near ___________ in Tamil Nadu and it generates __________ of electricity.
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Chennai, $$380\ MW$$
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Kanyakumari, $$380\ MW$$
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Chennai, $$200\ MW$$
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Kanyakumari, $$200\ MW$$
Explanation
The largest wind energy farm has been established near Kanyakumari in Tamil Nadu and it generates 380 MW of electricity.
Unequal heating of the landmass and water bodies by solar radiation generates air movement and causes __________.
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Rain
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Wind
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Light
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Sound
Explanation
Unequal heating of the landmass and water bodies by solar radiation generates air movement and causes winds to blow.
'Bio-gas plant is an efficient method of waste-disposal besides supplying energy and manure.' The statement is -
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True
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False
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Ambiguous
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Data Insufficient
Explanation
The large-scale utilization of bio-waste and sewage material provides a safe and efficient method of waste-disposal besides supplying energy and manure.
India is ranked _________ in harnessing wind energy for the production of electricity.
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First
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Second
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Third
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Fourth
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Fifth
Explanation
India is ranked
fifth
in harnessing wind energy for the production of
electricity.
Wind energy is
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Environment-friendly
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Efficient
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Renewable source of energy
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All of the above
Explanation
Wind energy is an environment-friendly and efficient source of renewable energy.
Environment-friendly as there are no polluting emissions.
Efficient as there is no energy loss.
Renewable source of energy because winds occur due to unequal heating of the landmass and water bodies by solar radiation. This process is perennial and can be used again and again and can be used to drive the blades of the windmill.
Slurry is rich in _________ & ___________.
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Nitrogen
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Oxygen
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Phosphorous
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Sulphur
Explanation
The slurry left behind in a bio-gas plant is removed periodically and used as excellent manure because it is rich in nitrogen and phosphorous.
A number of windmills are erected over a large area, which is known as ______________.
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wind energy garden
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wind energy area
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wind energy farm
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None of them
Explanation
A number of windmills are erected over a large area, which is known as
wind energy farm
.
___________ is used to produce energy from wind.
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Wind mill
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Flour mill
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Ball mill
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Rod mill
Explanation
Above figure shows a windmill.
Wind mills operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity.
____________ is called the country of winds.
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India
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London
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Rome
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Denmark
Explanation
Denmark is called the country of winds.
_____________ is the leader in harnessing wind energy for the production of electricity.
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India
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Germany
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France
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Spain
Explanation
Germany
is the leader in harnessing wind energy for the production of electricity.
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Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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Assertion is correct but Reason is incorrect
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Both Assertion and Reason are incorrect
Explanation
Fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing organic molecules originating in ancient photosynthesis that release energy in combustion.
The formation of fossil fuels is a very slow process, it takes millions of years. Hence, the amount of resources available for use is limited and is being exhausted by human activities like industrialization, rapid growth, etc. Thus, fossil fuels are exhaustible natural resources.
Fossil fuels can be regenerated in a short time.
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True
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False
Explanation
Fossil fuels are non-renewable resources. A fossil fuel is a fuel formed by the decomposition of buried dead organisms under the pressure and heat in the earth's crust over millions of years. They cannot be regenerated in a short time.
Burning of fossil fuels causes ________.
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Air pollution
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Water pollution
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Land pollution
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All of the above
Explanation
Burning of fossil fuels causes air, land, water pollution. When fossil fuels are burnt, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain.
Fossil fuels are cheaper.
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True
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False
Explanation
False.
Because fossil fuels are extracted from earth by various difficult methods and the fossil fuels are not present everywhere so transportation is required to send these fuels to another place.Due to addition of cost of extraction and cost of transportation fossil fuels are expensive.
Which among the following sources of energy cause environmental pollution?
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Solar energy
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Wind energy
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Fossil fuels
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All of the above
Explanation
Fossil fuels cause environmental pollution because fossil fuels produce large quantities of carbon dioxide when burned which is responsible for green house effect.
Why are we looking at alternate sources of energy like bio-mass and wind energy?
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Fossil fuels are non-renewable sources of energy.
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Fossil fuels cannot be replenished.
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Fossil fuels are not available in large amounts.
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All of the above.
Explanation
We are looking towards alternative sources of energy like solar power, wind power, geothermal, biomass, hydropower, waste energy and so on, because these renewable energy sources are not polluting the environment and are helping us to reduce the level of greenhouse gas emissions in the atmosphere and to reduce climate change effects.
Whereas fossil fuels are non-renewable and it is not available in larger amount.
Hence Option D
Which gases are released while burning fossil fuels?
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$$O_2$$
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$$CO$$
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$$CO_2$$
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$$HCl$$
Explanation
Greenhouse gases like carbondioxide ($$CO_2$$) and carbon monoxide ($$CO$$) are the major gases released when fossil fuels are burned.
But smaller amounts of methane ($$CH_4$$) and nitrous oxide ($$N_2O$$) are also emitted.
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