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Free "Water Pollution MCQ" App Download: BOD, which is not oxidized biologically is known as; MCQ with answers: biologically degradable, biologically inactive, biologically active, and bioactive. Practice Water Pollution Quiz Questions, download Google e-Book (Free Chapter) to develop educational skills.

Water Pollution MCQs PDF Download – Prep Test

MCQ 1: The BOD, which is not oxidized biologically is known as:

  1. Biologically Degradable
  2. Biologically Inactive
  3. Biologically Active
  4. Bioactive

MCQ 2: Secondary treatment is also known as:

  1. Biological Treatment
  2. Preliminary Treatment
  3. Secondary Treatment
  4. Tertiary Treatment

MCQ 3: What is important to support marine animals in water bodies?

  1. Dissolved Oxygen
  2. Nitrogen
  3. CO
  4. CO2

MCQ 4: The presence of hydrogen sulphide indicates anaerobic:

  1. Decomposition
  2. Eutrophication
  3. Degradation
  4. Biodegradation

MCQ 5: In higher temperature, the D.O concentration of water molecules is, comparatively:

  1. High
  2. Low
  3. Medium
  4. Very High

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