1
Approximately what percentage of the Earth’s surface is covered by water?
71%
What chemical is added to water to kill harmful germs?
Chlorine
A disease often spread through contaminated drinking water is:
Cholera
What is the process of collecting and storing rainwater?
Rainwater Harvesting
What is the process when the sun heats water and turns it into vapor?
Evaporation
Which ocean is the largest source of the Earth’s water?
Pacific Ocean
Common unit for measuring water flow rate?
Cubic meters per second
Q: When is World Water Day celebrated worldwide?
March 22
Which Sustainable Development Goal (SDG) focuses on Clean Water and Sanitation?
SDG 6
Q. What percentage of the world’s freshwater is accessible for human use?
Less than 1%
Where is most of the Earth's freshwater stored?
Glaciers and ice caps
Removing salt from seawater to make it drinkable is called:
Desalination
Water that is not safe for drinking is called:
Non-potable water
Q: When was the first World Glacier Day celebrated to raise awareness about melting glaciers and freshwater?
March 21, 2025
The upper level of the underground saturated zone is called:
Water table
Which Union Ministry oversees water resources, including Jal Jeevan Mission in India?
Ministry of Jal Shakti
What is the name of Singapore’s clean recycled water that is safe to drink?
NEWater
Which sector uses the largest amount of freshwater globally?
Agriculture/Farming
Which river carries the most water in the world?
Amazon River
Q: Which country is the world leader in wastewater reuse, recycling nearly 90% of its wastewater?
Israel
What is the term for the growing gap between water demand and available supply worldwide?
Global Water Crisis
Q. What do we call the area of land that drains water into a river?
Watershed or River Basin
A large underground layer that holds groundwater is an?
Aquifer
Q5: Which United Nations group leads global work on SDG 6 (Clean Water and Sanitation)?
UN-Water
Q: Which country is famous for its advanced water management systems, using dikes, canals, and barriers to prevent flooding because much of its land is below sea level?
Netherlands