Which of the following steps are involved in wastewater treatment?
(i) Aeration
(ii) Chlorination
(iii) Filtration

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(i) and (ii)

(i), (ii), and (ii)

(i) and (iii)

(ii) and (iii)

answer is D.

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Detailed Solution

Chlorination, aeration and filtration are the steps of Wastewater Treatment.

In wastewater treatment, the dirt is filtered by filtration. Biological waste is removed by aerobic bacteria by aerating wastewater. It is then disinfected by chlorination.

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