Botany-Sewage Treatment
NEET Botany Sewage Treatment MCQ Question
Type: MCQ-diagram based-Medium-Class 12
A diagram illustrates the process of sewage treatment, showing two main stages: primary treatment and secondary treatment. Which of the following best describes the role of aeration tanks in the secondary treatment stage?
A
They facilitate sedimentation of large particles.
B
They remove floating debris through filtration.
C
They enable mechanical agitation and air pumping into the effluent.
D
They separate grit and small pebbles through sedimentation.
Correct Answer
Option C
Detailed Explanation
In the secondary treatment of sewage, aeration tanks are used to mechanically agitate the primary effluent while air is pumped in to promote microbial activity.
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