MCQOPTIONS
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MCQOPTIONS
| 1. |
How is COD calculated? |
| A. | Waste water is oxidised chemically using sodium in acid solutions |
| B. | Waste water is oxidised chemically using dichromate in acid solutions |
| C. | Waste water is oxidised chemically using bromine in acid solutions |
| D. | Waste water is oxidised chemically using strontium in acid solutions |
| Answer» C. Waste water is oxidised chemically using bromine in acid solutions | |