Lesson eLearning

The primary treatment stage of a wastewater treatment plant mainly involves which of the following processes?

easy MCQ 1 mark Class 7 · Science · Wastewater Story
  1. Chemical oxidation
  2. Biological degradation
  3. Settling of solids
  4. Chlorination
Answer
Settling of solids

The correct answer is Settling of solids — Among the given options, only "Settling of solids" corresponds to this function.

Step-by-step solution

  1. Primary treatment primarily removes suspended solids through physical separation.
  2. Among the given options, only "Settling of solids" corresponds to this function.
Common mistake: Confusing primary treatment with secondary treatment processes

Concept tested: Primary treatment function

Published · How this solution was prepared and checked

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