Air under pressure is blown into the filtered water. This process is called:
chlorination
aeration
filtration
sedimentation
A process which happens in all temperatures is:
Conduction
Convection
Evaporation
Radiation
Wells and springs are the examples of
fresh water
surface water
salt water
underground water
It is used as coolant.
Water
Sulphur
Phosphorous
Carbon dioxide
All aerated drinks contain dissolved:
hydrogen
nitrogen
carbon dioxide
sulphur
Name the real source of drinking water?
Rain water
Well
Bore well
Rivers
The solubility of gases in water ___________ with a rise in temperature.
decreases
increases
no effect
increase rapidly
Contamination of water by harmful substances and germs etc are called water:
pollution
crystallisation
distillation
Economical use and avoiding the wastage of water is called:
distillation of water
condensation of water
conservation of water
crystallisation of water
Which regulates body temperature by the process of sweating and evaporation?
Hydrogen
Oxygen
