Question
Fill in the blanks with the help of the hints given below. [3 marks]
1. _________ helps to kill the germs present in the water. (Cooling/Boiling)
2. ___________ is a physical method used for removing impurities from water. (Chlorination/Filtration)
3. The process in which bleaching powder is used for purifying water is ___________ . (chlorination/sedimentation)