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Biology · PYQ NEET UG 2017

हिन्दी

Which of the following in sewage treatment removes suspended solids?

  1. Tertiary treatment
  2. Secondary treatment
  3. Primary treatment
  4. Sludge treatment

Correct answer · Option 3

Primary treatment

Explanation

Primary treatment in sewage treatment involves physical removal of particles (floating and suspended) through filtration and sedimentation.
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