Question

8.6. Why can’t we drink water straight from a river or a lake? Which purification methods help us to purify water if we have to drink water from a river or a lake​

Answer 1

Answer:

1.Adding 5 drops of chlorine And waiting 40 mins

2.adding some alum(a rock that makes the particles settle at the bottom of the bucket)

3.sifting it through a sheet of clean fabric with tiny holes

4. Boiling it

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Answer 2

Answer:

Because nowadays the water of river or lake is very much polluted. And if we drink water directly from the river or the lake, it will harm our health and will cause water borne diseases.

Hence hence we should use a boiling container or a small water purifier before drinking the water of the river or the lake.

Hope it's helpful

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