NEET Botany Sewage Treatment MCQ Question
Which of the following statements about sewage treatment processes is correct?
Primary treatment involves the removal of large particles through filtration and sedimentation.
Secondary treatment only uses chemical methods to purify sewage.
The primary effluent is not treated further after primary treatment.
Aeration tanks are used only in primary treatment to settle solids.
Correct Answer
Detailed Explanation
Primary treatment of sewage includes physical removal of particles through filtration and sedimentation, as described in the NCERT context. Secondary treatment involves biological processes, not chemical methods alone, and the primary effluent is further treated in aeration tanks.
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