Question

Match the columns with the correct pair.

• A. Used for muddy water
• B. Requires heat
• C. Bleaching powder
• D. Uses earthen pot

Answer 1

Clorination is the process of purifying water by adding chlorine or bleaching powder. Alum is also useful for filtering muddy water. In sedimentation process, the water is kept in earthen pots and the sediments are allowed to settle down. Boiling water for atleast 15 minutes will kill the harmful microorganisms.