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Question
A student tested a sample of water to be supplied for drinking. He found that it was not germ-free. What should he do?
A student tested a sample of water to be supplied for drinking. He found that it was not germ-free. What should he do?
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Solution
The correct option is A Add chlorine tablet
- Chlorination is an effective water purification method, which is used to kill germs. By adding chlorine or chlorine compounds to water, we can disinfect water and make it germ-free.
- Adding salt to water does not disinfect it or kill germs.
- Filtration is a physical process of removing suspended matter from the water by allowing it to pass through a filter medium that allows the water to pass while retaining the suspended matter. The germs present in the water are so small that they may pass through the pores of the filter. Therefore, filtration cannot be used to disinfect water and make it germ-free.
- Chlorination is an effective water purification method, which is used to kill germs. By adding chlorine or chlorine compounds to water, we can disinfect water and make it germ-free.
- Adding salt to water does not disinfect it or kill germs.
- Filtration is a physical process of removing suspended matter from the water by allowing it to pass through a filter medium that allows the water to pass while retaining the suspended matter. The germs present in the water are so small that they may pass through the pores of the filter. Therefore, filtration cannot be used to disinfect water and make it germ-free.
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