The waste of steel factories is rich in:
Correct answer: A. Cyanides and phenols
- A. Cyanides and phenols
- B. Chlorides and fluorides
- C. Carbonates and sulphides
- D. Bicarbonates and chlorides
Explanation
Wastewater and effluents from steel and coking operations may contain cyanides and phenolic compounds, which are major toxic pollutants. Chlorides and fluorides are more characteristic of some mineral-processing and chemical industries.
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