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Test Series-26





Instructions

  • Your test contains 10 multiple choice questions with only one answer
  • This is 30 min test.Please make sure you complete it in stipulated time
  • You can Finish this test any time using 'Submit' button.
  • Once finished you get a chance to review all question with correct answers and their solutions.


1.Fuel used in thermal power plants is?
  • Fossil fuel
  • biomass
  • water
  • Uranaium

2) which of these is true for solar energy
  • The energy obtained from sun is called solar energy
  • Ultra voilet rays are completely absorbed and eliminated by the atomosphere
  • it is a renewable source of energy
  • All the above

3. what are the drawback of solar energy heating devices?
  • It can not be used in night
  • it can not be used if the sky is covered with clouds
  • the direction has to be changed after short interval in order to have devics always facing sun
  • All the above



4.the power generated in a windmill:?
  • Depends on the height of the tower.
  • Depends on wind velocity
  • Can be increased by planting tall trees close to the tower
  • none of these

5. what is true about hydroelectric power plants?
  • water is converted into steam and the it is used to rotate turbine
  • it uses fossils fuels to generate electricty>
  • The potential energy of the water is converted into kinetic energy of water and which is then used to rotate turbin to generate electricty
  • None of these

6. which of these is not fossil fuel?
  • Coal
  • petroleum
  • Natural gas
  • wood

7. which gas is not present in Biogas?
  • Methane
  • Carbon dioxide
  • Hydrogen solphine
  • Nitrogen

8. which is of these is false?
  • charcoal is fuel which is obtained from wood. It mainly contain carbon
  • Biomass included cattle dung ,animal dung,agricultural waste
  • The main ingredient of bio-gas is ethane and it gives a lot of smoke and also produces a lot of residual ash
  • None of these

9. What is true of coal?
  • it is present in infinite quantity is earth
  • it a complex mixture of compounds of carbon,hydrogen and oxygen
  • peat coal has the highest percentage of carbon
  • anthracite has the lowest percentage of carbon

10.two statement Statement A: LPG mainly contain butane Statement B: CNG mainly contains methane
  • A is correct only
  • B is correct only
  • A and B both are correct
  • A and B both are incorrect



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