Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of _____________ present in it?
Correct answer: A. Potassium cyanide
- A. Potassium cyanide
- B. Coal ash
- C. Ortho-xylene
- D. None of these
Explanation
A 10°C temperature rise generally increases the toxic action of many pollutants by about twofold, and potassium cyanide is the listed toxic substance associated with this rule. Coal ash is primarily particulate matter, while ortho-xylene is not the intended example here.
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