Purification of Water
Purification of Water: Overview
This topic covers concepts such as Water Purification System in Water Works, Chlorination of Polluted Water, Water Storing Tanks, Using Alum for Water Purification, Boiling of Drinking Water, and Water Purification.
Important Questions on Purification of Water
Microbes are killed in water purification system by using _____.
Which of the following method is used as germicidal in modern times for drinking water?
What is the advantage of the purification of water by UV rays?
Describe the process of purification in an aqua filter.
Can we drink water directly from the tank? Is it safe?
Sewage and other waste water of towns and cities is processed for purification before letting it into a water body to prevent _____ of water.
How the water pollution becomes a threat to the aquatic living things?
Sewage water can carry micro-organisms that spread diseases.
In this process of purification of water, bleaching powder is added.
Samir has fallen sick during the monsoon season. The doctor has advised him to drink pre-boiled, cooled and covered water because
Yash collected some water from a lake and filtered it.
Is this water now safe for drinking?
What needs of people can be met by a tank?
Give a one-word answer for the following.
Which chemical is commonly added to disinfect water at home?
(Hint: It is recognised for its pungent, irritating odour in its gas form.)
Name the following.
Adding chlorine tablets to water. (Greasing / Galvanisation / Chlorination)
Chlorine can kill germs present in water.
Alum powder does not dissolve in water.
A substance called _____ is swirled in muddy water to help clean the water.
