Water Pollution 2 - JSS1 Physical and Health Education Past Questions and Answers - page 1
What does water purification involve?
Making water dirty
Making water clean and safe for use
Turning water into juice
Turning water into soda
Which method involves heating water to kill pathogens?
Boiling
Distillation
Filtration
Chemical Treatment
What is used as a physical barrier in filtration?
Sand and gravel
Salt and sugar
Oil and vinegar
Milk and honey
Which chemical is commonly used to treat water?
Chlorine
Oxygen
Carbon dioxide
Hydrogen
What method involves heating water to create steam?
Filtration
Reverse Osmosis
Distillation
UV Disinfection
What method involves heating water to create steam?
Filtration
Reverse Osmosis
Distillation
UV Disinfection
What does reverse osmosis use to remove impurities?
Salt
Sugar
Semipermeable membrane
Sand
Which method uses UV light to kill microorganisms?
Boiling
Filtration
Reverse Osmosis
UV Disinfection
What is added to water in chemical treatment?
Oil
Salt
Chlorine
Sugar
What can be used to simulate natural filtration processes?
Rocks and stones
Plastic and metal
Sand and gravel
Leaves and branches