Which part of the solar cooker is responsible for green house effect?
  • mirror
  • glass plate
  • Outer cover of the solar cooker
  • Coating with black colour inside the box
Which non-conventional source of energy uses the energy mass equation () to generate electricity?
  • Solar cells
  • Nuclear energy
  • Tidal energy
  • Geothermal Energy
Which of the following fuel is the least polluting?
  • Diesel
  • CNG
  • Hydrogen
  • LPG
The electric needs of an artificial satellite are fulfilled by using
  • solar cell panels
  • chemicals
  • nuclear energy
  • wind energy
How much solar energy is received by India in one year?
  • 500 trillion kWh
  • 5000 trillion kWh
  • 50 trillion kWh
  • 5 trillion kWh
The major problem in harnessing nuclear energy is how to
  • convert nuclear energy into electrical energy?
  • split nuclei?
  • dispose off spent fuel safely?
  • sustain the reaction?
Which of the energies given below is not energy achieved from the sea
  • Wave energy
  • Tidal energy
  • Nuclear energy
  • Thermal energy
A solar cell converts
  • Sound energy into Electrical energy
  • Solar energy into heat energy
  • Heat energy into Electrical energy
  • Solar energy into Electrical energy
Estimated value of solar constant is:
  • 1.4 kJ per second per square metre
  • 2.4 kJ per second per square metre
  • 3.4 kJ per second per square metre
  • 5.2 kJ per second per square metre
Ocean thermal energy is due to:
  • temperature difference at different levels in the ocean
  • energy stored by waves in the ocean
  • pressure difference at different levels in the ocean
  • tides arising out in the ocean
Which one of the following is not a source of non-conventional energy?
  • solar energy
  • Nuclear energy
  • Ocean thermal energy
  • coal
A typical solar cell can produce about ____ electricity.
  • 0.5 W
  • 10 W
  • 0.7 W
  • 7 W
The material used for making solar cells is
  • Silicon
  • Copper
  • Silver
  • Gold
Which radiations of sunlight are used in heating a solar cooker?
  • ultra violet radiation
  • infra red radiation
  • visible light
  • all of the above
The temperature difference between deep and shallow water of ocean is exploited to obtain:
  • Sea-waves energy
  • Ocean thermal energy
  • Tidal energy
  • Geothermal energy
Among the following colours, which is the highest absorbent of heat radiations?
  • Blue
  • White
  • Red
  • Black
Complete the sentence,The Sun has been radiating an enormous amount of energy at the present rate for nearly------- years and will continue radiating at that rate for about -------- years more.
  • 10 billion, 10 billion
  • 5 billion, 5 billion
  • 2 billion, 5 billion
  • 5 billion, 10 billion
Most of the energy we use originally comes from
  • soil
  • sun
  • oceans
  • air
Temperature difference required between the water at the surface and water at depths up to 2 km to operate ocean thermal conservation plants isa) 15oC to 20oCb) 50oCc) 20oC and mored) 10 to 15oC
  • a)
  • b)
  • c)
  • d)
Nuclear energy is
  • Conventional source of energy
  • Non-conventional source of energy
  • Harmful form of energy
  • None of the above
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0