Supplying pure drinking water in large quantities in villages and cities is called
Purified water
Filtering water
Three-tier purifying
Protected water scheme
The ceramic candles in the water filter contain which type of pores?
Very fine
Very thin
Very large
None of these
The water doesnot harm us is called
Potable water
Drinking water
Salt water
Rain water
The clear water from the sedimentation tanks is sent to
Filtration
Chlorination
Pumping
The presence of chemical or bio-chemical substances in water is called
Water pollution
Air pollution
Soil pollution
Sound pollution
The process of adding bleaching powder to well water is called
Sedimentation
People away from rivers use which type of water?
Wells
River water
Tanks built on tall pillars are called overhead
Well
Pipe
Canal
Tank
Who is the main cause for the spread of water- borne diseases?
Bacteria
Virus
Mosquitoes
Fly
In the decantation process the mud particles settle down because they are
Small
Heavy
Light weight
