Petrol is a ____fuel.
Solid
Liquid
Gaseous
None of these
Substances that liberate heat on burning are
air
fuels
carbon
soil
Kerosene is a product of
Coal
Petroleum
Biogas
A solar cell is made up of
Silicon
Rubber
Plastic
Silver
An example for conventional source of energy.
Sunlight
Wind
Petrol
Waves
Which one is an example of non- conventional source of energy?
Kerosene
Diesel
Coal, petroleum and natural gas are known by the name
fossil fuels
bio fuels
alternative fuels
none of these
Find the odd one.
L.P.G
C.N.G
Hydrogen
The source of all our energy is the
Moon
Sun
