Question

half flush
water running for rinsing
D. Answer the following questions in brief.
1. State any two ways which can lead to contamination of water.
2. Give the meaning of the term 'water pollutants'.
3. Name two of the main diseases that can be caused by drinking contaminated
water.
4. Name two chemicals that may help in purifying water.
5. Name the kind of 'growths' in water that lead to a depletion of the oxygen
dissolved in it.
E. Answer the following questions.
1. List the main parameters that need to be followed before water is supplied for
drinking purposes.
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Answer 1

Answer:

hope it helps you.....

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Answer 2

Answer:

1. human excreta and soap bubbles
2. The objects which pollutes water are known as water pollutants.
3. typhoid and cholera
4. bleaching powder and turti
5. ?