sources of energy

Which one of the following forms of energy leads to least environmental pollution in the process of its harnessing and utilization.

• nuclear energy

• geothermal energy

• thermal energy

• solar energy

biogas is formed in the

• in the presence of water only

• in the presence of water and in absence of oxygen

• in the presence of oxygen only

• in the absence of water and n absence of oxygen

The working fluid in ocean thermal power plant is

• volatile liquid like ammonia

• petrol

• liquified petroleum gas

• charcoal

The value of solar constant is

• 1.8kW/m2

• 1.6kW/m2

• 1.4kW/m2

• 1.2kW/m2

Tidal energy is harnessed by constructing

• bridge

• road

• pipe

• dam

The working of atom bomb is based on the principal of

• conversion of wave energy into electrical energy

• release of energy in nuclear fission

• conversion of mechanical energy into electrical energy

In a nuclear fission reaction the mass of the original nucleus is

• just little more than the sum of the masses of the individual product

• just equal to the sum of the masses of the individual product

• just little less than the sum of the masses of the individual product

• not comparable with individual masses of the product

Which Fuel is used in thermal power plants. -

• A) WATER

• B) URANIUM

• C) BIOMASS

• D) FOSSIL FUEL

In a hydro power plant

• potential energy possessed by stored water is converted into electricity

• kinetic energy possessed by stored water is converted to potential energy

• electricity is extracted from water

• water is converted into steam to produce electricity

The largest wind energy farm is established in

• Chennai

• Madurai

• Kanyakumari

• Kalpakkam