Which of the following is not related to industrial or chemical pollution?
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Nitrate contamination
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Protozoa contamination
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Sulphate contamination
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Mercury contamination
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Lead contamination
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