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.
Explain why the fish were dying.
If the factory waste is acidic in nature, how can it be neutralised?

Answer 1

since the waste from the industries are thrown into the river it can clog up the river
fishes might die due to the insufficiency of oxygen in the water
lime can be added to neutralize the water

Answer 2

Answer: Since factory waste may contain acids or bases, it can kill the fish. If the factory waste is acidic in nature, it can be neutralised by adding basic substances like quicklime or slaked lime.