Multiple choice

Which of the following is not related to industrial or chemical pollution?

  1. Nitrate contamination

  2. Protozoa contamination

  3. Sulphate contamination

  4. Mercury contamination

  5. Lead contamination

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It is a microbiological contamination. We can understand that water can be polluted by the following ways: (1) Microbiological (2) Industrial (3) Agricultural (4) Petrochemical (5) Sewage disposal (6) Radiological (7) Thermal pollution