Which of the following is usually not a water pollutant?
A. sewage
B. fertilizer
C. fly ash
D. pesticide
Answers
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Answer:
answer is option C.flyash
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C. Fly ash is not a water pollutant.
Explanation:
- Sewage, fertiliser and pesticide are used to defines the water with high concentration of impurities which are dirt and acid.
- Fly ash are particulates that are produced due to combustion of coal.
- This is mainly produced from factories that are powered using coals.
- Usually, the fly ash is purified from air with electrostatic precipitators.
- These particles are harmful because of presence of mercury, arsenic, lead and so on.
- Fly ash can increase the pH of water and soil and make it unfit for fish and plants. Respiration of fly ash by human causes severe respiratory problem.
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