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
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Which method involves heating water to kill pathogens?
Boiling
Distillation
Filtration
Chemical Treatment
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What is used as a physical barrier in filtration?
Sand and gravel
Salt and sugar
Oil and vinegar
Milk and honey
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Which chemical is commonly used to treat water?
Chlorine
Oxygen
Carbon dioxide
Hydrogen
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What method involves heating water to create steam?
Filtration
Reverse Osmosis
Distillation
UV Disinfection
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What method involves heating water to create steam?
Filtration
Reverse Osmosis
Distillation
UV Disinfection
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What does reverse osmosis use to remove impurities?
Salt
Sugar
Semipermeable membrane
Sand
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Which method uses UV light to kill microorganisms?
Boiling
Filtration
Reverse Osmosis
UV Disinfection
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What is added to water in chemical treatment?
Oil
Salt
Chlorine
Sugar
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What can be used to simulate natural filtration processes?
Rocks and stones
Plastic and metal
Sand and gravel
Leaves and branches
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