What is the best way to reduce water pollution?
Burning plastic
Cutting forest
Seaways treatment
Dumping waste into river
What is the main purpose of a dam?
Mining
Only farming
Water storage & electricity
Road transport
Which ion in drinking water is harmful?
Chlorine
Lead (pb)
Sodium
Fluoride
During evaporation, water changes into which state?
Why is rainwater harvesting done?
To make plastic
To store water
To generate electricity
To extract oil
Which organism grows more in polluted water?
Which of the following is a source of water pollution?
Industrial waste
Rainfall
Evaporation
Photosynthesis
What is the neutral pH value of water?
When is World Water Day observed?
22 March
10 June
5 September
15 August
Which state of matter is NOT a form of water?
