NEET Botany Sewage Treatment MCQ Question
Which of the following statements about sewage treatment is correct?
Primary treatment involves physical removal of particles through filtration and sedimentation.
Secondary treatment does not involve microbial action.
Sewage treatment plants have been increasing in number to keep up with urbanization.
Floating debris is removed last in the sewage treatment process.
Correct Answer
Detailed Explanation
Primary treatment in sewage treatment focuses on the physical removal of particles through filtration and sedimentation, as stated in the NCERT context. Secondary treatment, however, relies on biological methods, primarily involving microbes. There is also a concern that the number of sewage treatment plants has not kept pace with the increase in sewage production due to urbanization.
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