Power plant that uses kinetic and potential energy of water to generate electricity is called 
  • Nuclear Power Plant
  • Hydro electric Power plant
  • Thermal Power Plant
  • Biogas Power Plant
Which one of the following is not a fossil fuel ?
  • Liquified petroleum gas
  • Coal gas
  • Compressed natural gas
  • Biogas
Choose the incorrect statement regarding wind power
  • Wind hitting at the blades of a windmill causes them to rotate. The rotation thus achieved can be utilised further.
  • The potential energy content of wind blowing at high altitudes is the source of wind power.
  • It is expected to harness wind power to minimum in open spaces.
  • One possible method of utilising the energy of rotational motion of the blades of a windmill is to run the turbine of an electric generator.
In a hydro-electric power plant:
  • Electricity is extracted from water
  • Kinetic energy possessed by stored water is converted into potential energy
  • Water is converted into steam to produce electricity
  • Potential energy possessed by stored water is converted into electricity
Which of these does not require any fuel to generate electricity?
  • Nuclear power plant
  • Thermal power plant
  • Biogas power plant
  • Wind mill
The fossil fuels which are replenished again are called
  • renewable
  • man made fuels
  • non-renewable
  • natural fuels
Which one is the non-renewable source of energy?
  • Ocean wave energy
  • Wind energy
  • Solar energy
  • Natural gas
The use of charcoal is discouraged even though it is a better fuel than coal, because:
  • coal burns comparitively smokeless
  • coal has a higher heat generation efficiency
  • Charcoal burns with flames
  • charcoal is prepared from destructive distillation of wood
The main constituent of bio-gas is:
  • Ethylene
  • Methane
  • Hydrogen and oxygen
  • Oxygen and Ethane
The minimum speed of wind which is required to run a windmill is:
  • 15Km/h
  • 35 Km/h
  • 25Km/h
  • 5 Km/h
The capacity of wind mill farm situated in kanyakumari is
  • 200 MW
  • 250 MW
  • 380 MW
  • 420 MW
Choose the incorrect statement
  • Bio-mass is a renewable source of energy
  • The main ingredient of bio-gas is methane and it gives a lot of smoke and also produces a lot of residual ash.
  • We are encouraged to plant more trees so as to ensure clean environment and also provide bio-mass fuel
  • Gobar-gas is produced when crops, vegetable wastes, etc., decompose in the absence of oxygen
Identify A and B in the following figure :
014-300x184.jpg
  • A = Gas chamber, B = Mixture
  • B = Gas chamber, A = Mixture
  • A = Digestor, B = Gas outlet
  • None of the above
Major pollutants produced during combustion of fossil fuels are
  • Carbon
  • Nitrogen
  • Sulphur
  • Oxides of carbon, sulphur, nitrogen
In a hydroelectric power plant more electrical power can be generated if water falls from a greater height because:
  • the electricity content of water increases with height
  • larger amount of potential energy is converted into kinetic energy
  • more water molecules dissociate into ions
  • its temperature increases
The power generated in a windmill:
  • depends on wind velocity
  • depends on the height of the tower
  • is more in rainy season since damp air would mean more air mass hitting the blades.
  • can be increased by planting tall trees close to the tower
Among the following energy sources, which one is least used for generating electricity in India?
  • Hydro
  • Natural gas
  • Wind
  • Nuclear
The major source of energy used to produce electricity in India is
  • Coal
  • Nuclear
  • Hydro
  • Petroleum and Natural gas
Gasoline is produced by refining which fossil fuel?
  • natural gas
  • petroleum
  • propane
  • coal
Acid rain happens because:
  • burning of fossil fuels release oxides of carbon, nitrogen and sulphur in the atmosphere
  • earth's atmosphere contains acids
  • sun leads to heating of upper layer of atmosphere
  • electrical charges are produced due to friction amongst clouds
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