What is the full form of UV?
Ultra radiation
Ultra violet
Unified radiation
Unified violet
The process of adding bleaching powder to well water is called
Filtration
Sedimentation
Chlorination
Pumping
How many categories water is divided?
2
5
9
7
Mosquito can be prevented by rearing which type of fish?
Star fish
Golden fish
Gambusia fish
Cat fish
The water doesnot harm us is called
Potable water
Drinking water
Salt water
Rain water
Name a vessel that used to store water?
Tank
Well
Hand pump
Metal pots
To remove floating substances from water we use
Boiling
Chlorinisation
Using filter paper
How many percentage of water available in the seas and oceans?
90
97
99
79
Under ground water comes into the pit and it is called a
Tap
River
Ocean
Water is mixed with other impurities is called
Pure water
Polluted water
