Q1 of 27 Page 93

Which of the following is waste water?

Water coming out of a laundry is waste water as it contains harmful substances that are mixed with it and should be treated so as to consume it.

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2

Sewage is mainly a

 3

Which of the following is/are products of wastewater treatment?

 4

Open drain system is a breeding place for which of the following.

 5

Water polluted by various human activities causes a number of water borne diseases. Which of the following is not a water borne disease?