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CBSE Questions for Class 10 Physics Sources Of Energy Quiz 1 - MCQExams.com
CBSE
Class 10 Physics
Sources Of Energy
Quiz 1
One of the biggest hydro-electric power project is
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Sardar Sarovar
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Tehri Hydropower
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Koyna hydroelectric project
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None of the above
Explanation
Tehri Dam is the biggest hydro-electric power project in India.
Tehri Hydropower Complex – 2,400MW
The disposal of waste produced in a nuclear power plant is difficult because they are:
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highly inflammable
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highly radioactive
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highly poisonous
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extremely heavy
Explanation
Waste formed as a byproduct of nuclear reactions is a nuclear waste. Nuclear wastes are highly radioactive in nature.
Coal can be converted into:
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synthetic petrol
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coal gas
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electricity
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All of these
Explanation
Coal can be consumed in various form by converting it for electricity generation, liquid fuel, for cement manufacturing, steel production and synthetic fuel etc.
What is the biggest advantage of nuclear energy?
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It is clean.
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Huge amount of energy is produced.
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The radioactive emissions from a nuclear power plant are healthy.
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Nuclear power plant can be easily set up in urban areas.
Explanation
The yield of nuclear energy is enormous and hence it has extraordinary potential as an energy source. It is one of the most low-carbon energy sources.
Which of the following is not a type of pollution?
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Air pollution.
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Water pollution.
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Space pollution.
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Noise pollution.
Explanation
Various types of pollution are air pollution, water pollution, noise pollution, soil pollution, etc. Space pollution is not a type of pollution.
What is the value of solar constant?
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$$1.4\ kJ.s^{-1}.m^{-2}$$
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$$1.4\ W.m^{-2}$$
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$$140\ kW.m^{-2}$$
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$$14\ kJ.s^{-1}.m^{-2}$$
Explanation
The solar constant is estimated to be approximately 1.4 kJ per second per square metre.
It denotes the rate at which energy reaches the unit area on earth's surface from the sun.
In order to fulfill our energy requirements, we try to:
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Improve the efficiency of energy usage
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Look for new sources of energy
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Both $$A$$ and $$B$$
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None of these
Explanation
As our demand for energy increases, we need to look for more and more sources of energy. We could develop the technology to use the available or known sources of energy more efficiently and also look to new sources of energy.
In ancient times, _____________ was the most common source of heat energy.
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LPG
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CNG
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Wood
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Natural Gas
Explanation
In ancient times, wood was the most common source of heat energy.
Which among them work using solar energy?
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Solar Cell
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Solar Heater
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Solar Cooker
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All of the above
Solar cookers are more useful in cloudy weather. The statement given is -
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True
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False
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Ambiguous
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Insufficient data
Explanation
The solar cooker cannot be used at night and during cloudy weather. It takes more time to cook food. The direction of the solar cooker is to be changed continuously towards the direction of the Sun.
_________ left behind in a bio-gas plant is used as an excellent manure.
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Slurry
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Methane
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Soil
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Hydrogen
Explanation
Slurry left behind is removed periodically and used as excellent manure.
Which of the following devices does not make use of solar energy directly?
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Solar panels
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Solar furnaces
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Solar cells
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Dry cells
Explanation
Other than dry cells, i.e., the battery cells, all three devices have been invented to generate, store or directly utilize solar energy. whereas, Dry cells generate energy from a chemical reaction.
Hence, Option D
Define biomass.
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Fossil fuels are also called biomass.
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The wastes and dead parts of living beings are called biomass.
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The wastes from industrial applications are called biomass.
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The wastes and dead parts of living beings buried deep inside the earth are called biomass.
Explanation
The waste and dead parts of living beings is called biomass. Wastes and dead parts of living being buried deep inside the earth turns up into fossil fuels after a long time.
Nuclear fusion produces:
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argon
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deuterium
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helium
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krypton
Explanation
Nuclear fusion reaction takes place in the core of the sun in which 2 molecules of hydrogen combine to form helium molecule.
$$\ _{1}H^{2}+\ _{1}H^{2}\rightarrow \ _{2}He^{4}$$
Hence, option C is correct.
Fill in the blank space by choosing the correct word.
The non-usable animal or vegetable products are collectively called ............
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$$potential$$
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$$renewable$$
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$$fossil$$
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$$biomass$$
Explanation
Biomass is biological material derived from living, or recently living organisms. In the context of biomass for energy this is often used to mean plant based material, but biomass can equally apply to both animal and vegetable derived material.
Hence, t
he non-usable animal or vegetable products are collectively called Biomass.
Fill in the blank space by choosing the correct word.
Coal and petroleum are commonly called .................... fuels.
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$$renewable$$
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$$biomass$$
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$$fossil$$
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$$tidal$$
Explanation
Coal and petroleum are commonly called fossil fuels because they are formed from the prehistoric remains of dead plants and animals buried deep under the earth's crust under special conditions.
Wind-energy map gives information about the
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Causes of wind
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Amount of rainfall
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Intensity of earthquake
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None of these
Explanation
The wind energy map gives information about the trend of wind energy of various locations so that we can make wind farms on the sites which receive higher wind energy compared to other places.
Fill in the blank space by choosing the correct word.
Water stored in the reservoirs of hydro-electric dams has ................. energy.
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$$tidal$$
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$$fossil$$
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$$potential$$
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$$biomass$$
Explanation
$$Gravitational $$ $$Potential$$ $$ energy $$=$$mgh$$ so it depends on height.
So anything at some height have potential energy.
Potential energy is stored energy or the energy of position. The potential energy stored in a body of water held at a given height is converted to kinetic energy (movement energy) which is used to turn a turbine and create electricity.
Hence, w
ater stored in the reservoirs of hydro-electric dams has potential energy.
The major problem in harnessing nuclear energy is how to:
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split nuclei
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sustain the reaction
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dispose off spent fuel safely
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convert nuclear energy into electrical energy
Explanation
Major problem in harnessing nuclear energy is ,how to dispose its residue which is highly radioactive in nature. It requires proper waste disposal mechanism.
Fuel used in a thermal power plant is:
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Water
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Uranium
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Biomass
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Fossil fuel
Explanation
A
Thermal power plant
is a power plant
where steam produced by the burning of fossil fuels
is used to drive a steam turbine
. This turbine is connected to an electrical generator.
Sun is the ultimate source of energy for the earth.
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True
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False
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Ambiguous
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Data insufficient
Explanation
The sun is the ultimate source of almost all kinds of energy on earth,
either directly or indirectly.
Directly sun gives us solar power and is perfect non-conventional energy source. Moreover, Fossil fuels (coal, oil and gas) are the transformed forms of plants (and animals) which once lived on the earth and grew capturing the energy of the sun. Biomass is a product of photosynthesis where the sun has the major role. Hydro-electricity depends upon the water cycle which again is dependent on solar radiation. Similarly, wind energy, tidal power, wave power all, in some way or other, and depend on the sun.
The main constituent of biogas is:
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Methane
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Carbon dioxide
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Hydrogen
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Hydrogen sulphide
Explanation
Biogas typically refers to a mixture of gases produced by the breakdown of organic matter in the absence of oxygen.
Hence, its main constituent will be methane.
The source of energy of the hot water spring is geothermal energy.
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True
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False
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Ambiguous
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Data insufficient
Explanation
Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
In geothermal plants, steam is raised by pumping cooler water into the layer of magma.
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True
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False
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Ambiguous
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Data insufficient
Explanation
The most common way of capturing the energy from geothermal sources is to tap into naturally occurring 'hydrothermal convection' systems, where cooler water seeps into Earth's crust, is heated up, and then rises to the surface. Once this heated water is forced to the surface, it is a relatively simple matter to capture that steam and use it to drive electric generators. Geothermal power plants drill their own holes into the rock to more effectively capture the steam.
Hence, the statement is true.
Solar cell is a device which directly converts _______ into electric energy.
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heat energy
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mechanical energy
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chemical energy
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solar energy
Explanation
Solar cell is a device which directly converts solar energy into electric energy.
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light(sun) directly into electricity by the photovoltaic effect. It is a form of photoelectric cell, defined as a device whose electrical characteristics, such as current, voltage, or resistance, vary when exposed to light. Solar cells are the building blocks of photovoltaic modules, otherwise known as solar panels.
The energy which cooks food in a box type solar cooker is :
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heat energy only
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light energy only
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both heat and light energy
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none of these
Explanation
In the box type solar cooker, the light coming from the sun is used to cook the food by concentrating light onto the food material.Hence light energy is being used here to cook food.
The gas obtained from biomass for generating heat energy is :
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LPG
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CNG
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Biogas
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hydrogen
Explanation
Bio-degradable material is kept for a long time inside a closed chamber in absence of oxygen, most of the organic matter is broken down into biogas which is a mixture of methane and carbon dioxide in approximately three weeks. The biogas is collected in a spherical gas holder from the top of the biogas reactors. The gas produced by biomass is knows as biogas.
Which is not the renewable source of energy?
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wind
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water
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natural gas
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tides
Explanation
Wind, water, tides all can be used again and again. But, once natural gas is burnt, it can never be used again.It is in limited amounts on earth.
The tidal power plants are constructed near the mouth of ................ bays.
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renewable
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huge
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narrow
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broad
Explanation
Tidal energy of sea waves is harnessed by constructing hydro electric dams at the mouth of narrow bays along the sea coast.
Hence, The tidal power plants are constructed near the mouth of narrow bays.
Coal is a renewable source of energy.
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True
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False
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Ambiguous
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Data insufficient
Explanation
The resources which are exhausted after continuous utilization are known as non-renewable resources. Fossil fuels are non-renewable sources of energy. Coal is a fossil fuel formed over millions of years by the decay of land vegetation.
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