Consider the following wastes present in sewage and identify the organic impurities. (i) Animal waste (ii) Fruits and vegetables (iii) Nitrates (iv) Phosphates (v)Phosphorous (vi) Nitrogen.
a (i) and (ii) only
b (v) and (vi) only
c (iii), (iv), (v) and (vi)
d (i), (ii), (iii) and (iv) only
Answers
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Answer:
Which of the following is wastewater?
(a) Water trickling from a damaged tap.
(b) Water coming out of a shower.
(c) Water flowing in a river.
(d) Water coming out of laundry.
Soln:
The answer is (d) Water coming out of laundry.
Explanation:
Water discharged during after routine works like washing clothes, flushing toilet, cleaning utensils makes the water dirty. This water is called as wastewater. Water coming out of the damaged tap, water coming out of shower and water flowing in a river are not dirty hence water coming out of a laundry is the right answer.
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