NEET Botany Sewage Treatment MCQ Question
Which of the following statements about sewage treatment is correct?
Sewage treatment involves both physical and biological methods to purify water.
All sewage treatment plants use only chemical methods for purification.
Sewage treatment doesn't address the problem of water pollution effectively.
Microbial treatment of sewage is a recent technological advancement.
Correct Answer
Detailed Explanation
Sewage treatment consists of primary treatment, which involves physical removal of solids, followed by secondary treatment, which utilizes heterotrophic microbes for biological purification, demonstrating the combination of physical and biological methods.
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