(a) Since factory waste may contain acids or bases, it can kill the fish.
(b) If the factory waste is acidic in nature, it can be neutralised by adding basic substances like quicklime or slaked lime.
Question
Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die. (a) Explain why the fish were dying. (b) If the factory waste is acidic in nature, how can it be neutralised?
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