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Published on: 29/08/2019
Sources of Energy
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1.
Fuel used in thermal power plant is
Water
Uranium
Biomass
Fossil fuels
2.
Acid rain happen because
Sun leads to heating of upper layer of atmosphere
Burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere.
Electrical charges a produced due to friction among clouds
Earth's atmosphere contains acids.
3.
Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?
Geothermal energy
Wind energy
Natural energy
Bio-mass
4.
Which of the following is not an example of a bio-mass energy source?
Wood
Gobar-gas
Nuclear energy
Coal
5.
A solar water heater cannot be used to get hot water on
A sunny day
A cloudy day
A hot day
A windy day
6.
What is energy?
7.
What are the applications of solar cells?
8.
What is a nuclear reactor?
9.
What is meant by the 'calorific value' of a fuel? How is it determined? Arrange the following fuels in a decreasing order of their calorific values: Kerosene, Coal, LPG.
10.
Name the reaction responsible for large energy production in the sun.
1.
(d)
Fossil fuels
2.
(b)
Burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere.
3.
(c)
Natural energy
4.
(c)
Nuclear energy
5.
(b)
A cloudy day
6.
( )
Energy is the capability to do work.
7.
( )
Solar cells are used in traffic lights, artificial satellites, solar calculators etc.
8.
( )
Nuclear reactor is a device which is used as an energy source. They get their energy from controlling nuclear fission reaction and the energy released from the reaction is primarily used to generate electricity.
9.
( )
The amount of heat produced in burning the unit mass of a fuel completely is known as the calorific value of that fuel. It is determined with the help of Bomb Calorimeter.
Arrangement of the fuels in a decreasing order of their calorific values.
LPG > Kerosene > Coal
10.
( )
Nuclear fusion.
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CBSE 10th Standard CBSE Subjects
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