Science Quiz

Sources of Energy Class 10 Quiz

Thermal power plant

Practice these Important questions from Sources of Energy class 10 quiz section. These are very important for class 10 students and also for those aspirants who are preparing for governments exams. Practice these questions again and again. Zaan laga do ya phir zaane do.

Sources of Energy

Question 1
A Solar cell is an electrical device that converts the energy of light directly into electricity by the
A
Photovoltaic effect
B
Chemical effect
C
Atmospheric effect
D
Physical effect
Question 1 Explanation: 
Photovoltaic cells convert sunlight into electricity A photovoltaic (PV) cell, commonly called a solar cell, is a nonmechanical device that converts sunlight directly into electricity. Solar-powered photovoltaic (PV) panels convert the sun's rays into electricity by exciting electrons in silicon cells using the photons of light from the sun. This electricity can then be used to supply renewable energy to your home or business.
Question 2
In hydroelectric power, what is necessary for the production of power throughout the year
A
High amount of air
B
High intense sunlight
C
Nuclear power
D
Dams filled with water
Question 2 Explanation: 
Electricity is generated by using the Kinetic energy of the running water. That Kinetic energy is used to run the turbine that will be connected with the generator. So if you have running water all around the year then you can produce electricity from hydrowater all year around. Take the example of DAMS where water is stored for a period of time. When the DAM reaches the storage threshold limit the gates will be opened for water to flow, this flowing water will be used to irrigate the near by area as well as for producing electricity So if you have running water all around the year then you can produce electricity from hydrowater all year around. Take the example of DAMS where water is stored for a period of time. When the DAM reaches the storage threshold limit the gates will be opened for water to flow, this flowing water will be used to irrigate the near by area as well as for producing electricity.
Question 3
The world’s first 100% solar powered airport located at
A
Bengaluru, Karnataka
B
Cochin, Kerala
C
Chennai, Tamil Nadu
D
Mumbai, Maharashtra
Question 3 Explanation: 
Cochin International became the world's first solar-powered airport in 2015, when it transformed a patch of land previously reserved for cargo handling into a 12-megawatt solar plant. This new energy source provides all the power the airport needs, and even generates surplus for the state grid.
Question 4
Which of the following country generate all their electricity using renewable energy
A
Iceland
B
England
C
USA
D
Greenland
Question 4 Explanation: 
Iceland is currently the only country in the world that obtains 100% of its energy from renewable resources, with 87% of its from hydro-power and 13% from geothermal power. Costa Rica is among the top renewable energy users, with 99% of its electricity needs coming from hydroelectric, geothermal, and wind.
Question 5
Which method is used to produce electricity in hydroelectric power plant?
A
By boiling the water to produce steam
B
By ionizing water
C
By running dynamo by kinetic energy
D
Any of the above
Question 6
In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because:
A
Its temperature increases.
B
The electricity content water increases with height
C
More water molecules dissociate into ions.
D
Larger amount of potential energy is converted into kinetic energy.
Question 7
Select the important factor for the site selection of a thermal power plant.
A
Distance from the populated area
B
Availability of fuel
C
Availability’ of water
D
Cost of plant
Question 7 Explanation: 
Water is required to produce steam. Thermal power plants are setup near the coal field and transmission of electricity is easy than transporting fuel.
Question 8
Ocean thermal energy is due to:
A
energy stored by waves in the ocean
B
temperature difference at different levels in the ocean
C
pressure difference at different levels in the ocean
D
tides arising out in the ocean
Question 8 Explanation: 
Energy of warm surface water used to vaporise the low boiling point liquid ammonia. This vapours at high pressure is used to strin the turbines to generate electricity. Deep ocean cold water again condenses the used vapour into liquid.
Question 9
The rise of sea-water during high tide is caused by the gravitational pull of the:
A
Sun
B
Earth
C
Moon
D
Mars
Question 9 Explanation: 
High tides and low tides are caused by the Moon. The Moon's gravitational pull generates something called the tidal force. The tidal force causes Earth—and its water—to bulge out on the side closest to the Moon and the side farthest from the Moon. These bulges of water are high tides.
Question 10
The disposal of wastes produced in a nuclear power plant is a big problem because it is:
A
Highly radioactive
B
Highly inflammable
C
Extremely foul smelling
D
Too heavy
Question 11
The major constituent of biogas is
A
Methane
B
Ethane
C
Propane
D
Butane
Question 11 Explanation: 
Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
Question 12
Which method is used to produce electricity in thermal power plant?
A
By heating chargeable cells
B
By boiling water
C
By pushing pistons by heat energy
D
Any of above
There are 12 questions to complete.

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