Sea water is not fit for drinking because it contains a large amount of:

1. suspended impurities
2. sugar
3. dissolved salts
4. none of the above

The gas which adds taste to water is:

1. oxygen
2. nitrogen
3. hydrogen
4. carbon dioxide

Which of the following is a water-borne disease?

1. Influenza
2. Typhoid
3. COVID-19
4. Malaria

Name:

(a) Two chemicals used to destroy germs present in water.

(b) Two diseases which spread through impure water.

(c) A chemical used for loading.

(d) Two substances which add taste to water.

(e) Two household methods to get safe drinking water.