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1
Which of the following is the property of glass?
It allows all wavelengths of infrared radiations to pass through it
It allows only short wavelength infrared radiations to pass through it
It allows only long wavelength infrared radiations to pass through it
It does not allow infrared radiations of any wavelength to pass through it
2
Which of the following is not biomass?
Sun
Rice husk
Wood
cattle dung
3
A solar panel is made by combining a large number of
solar cookers
Solar cells
solar water heaters
Solar concentrators
4
Which energy is not derived from the sun?
Nuclear energy
Wind energy
Biomass energy
Ocean-wave energy
5
Solar cell panels are most suitable in _______________
Sandy areas
Urban areas
Hilly areas
Remote areas
6
A major drawback of a nuclear power plants is that it
Contaminates environment with hazardous radiations
Is very costly to set up
Uses uranium which not easily available
All of these
7
The major component of the sun is
Helium
Hydrogen
Carbon vapours
Oxygen
8
Solar cooker can be used to cook food on a __________
Cloudy day
Sunny day
Windy day
Rainy day
9
Which of the following processes is involved in the tidal energy ?
The vapours of volatile liquid like ammonia is used to run the turbine of generator
Difference in sea levels gives us tidal energy.
The kinetic energy possessed by huge waves near the sea - shore can be trapped to generate
10
Which of the following mirrors can be used to focus sunlight in a solar cooker ?
Concave
Convex
Plane
Any of them
11
Which of the following is not true about infrared radiations ?
All hot bodies emit infrared radiations.
They heats up any body that comes in its path.
They are absorbed by the ozone layer.
They are longer than visible light.
12
Which of the following alternative energy sources, pollute the enviroment ?
Geothermal power plant
Nuclear power plant
Solar cookers
Both (B) & (C)
13
Which of the following is not an energy from obtained from the sea ?
Tidal energy
Ocean thermal energy
Hydro energy
Wave energy
14
Ocean - thermal - energy can be utilized when the temperature difference between the water at the surface and water at depths up to 2 km is __________
C or more
None of these
15
An isotope of hydrogen having one neutron and one proton in its nucleus is named ______________
Protium
Tritium
Deuterium