NEET Botany Sewage Treatment MCQ Question
Which of the following statements about sewage treatment is correct?
Primary treatment involves eliminating large particles through filtration and sedimentation.
Secondary treatment focuses on physical removal of solid waste from sewage.
Aeration tanks are used exclusively in primary treatment to settle sludge.
Microbial treatment has been largely replaced by advanced man-made technologies.
Correct Answer
Detailed Explanation
Primary treatment is indeed characterized by the physical removal of particles using filtration and sedimentation, resulting in primary sludge and effluent. Secondary treatment involves biological processes, contrary to option B, while option C misrepresents the use of aeration tanks, and option D is incorrect as microbial treatment remains unmatched by man-made technologies.
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