NEET Botany Sewage Treatment MCQ Question
Which of the following combinations correctly describe the stages and processes involved in sewage treatment?
Primary treatment involves filtration and sedimentation; Secondary treatment involves mechanical agitation and aeration.
Primary treatment is focused on biological processes; Secondary treatment involves only chemical additions.
Primary treatment includes only sedimentation; Secondary treatment does not require aeration.
Primary treatment eliminates all pathogens completely; Secondary treatment uses no microbes.
Correct Answer
Detailed Explanation
Primary treatment of sewage consists of physical removal of particles through filtration and sedimentation, while secondary treatment involves biological processes where the primary effluent is aerated and agitated to promote microbial activity.
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