The ceramic candles in the water filter contain which type of pores?
Very fine
Very thin
Very large
None of these
How many percentage of water available in the seas and oceans?
90
97
99
79
Farmers use which type of pesticides that is harmful to the water?
Cow dung
Weedicides
Natural fertilizers
Chemical pesticides
How much part of our earth is covered with water?
1/2
1/3
3/4
1/4
The clear water from the sedimentation tanks is sent to
Filtration
Chlorination
Pumping
When boil the sea water, water evaporates and we get?
Salt
Sugar
Minerals
Metals
From where we collect drinking water?
Sea
Well
Ocean
Dam
What is the most basic needs of life?
Oxygen
Water
Carbon-dioxide
Nitrogen
Drinking polluted water during monsoon we will catch ?
Fever
Cholera
Typhoid
Diarrhea
In the decantation process the mud particles settle down because they are
Small
Heavy
Light weight
