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The pH of a sample of water collected fr...

The pH of a sample of water collected from a river is found to be in the range of 3.5 to 4.5. The most likely reason for this is the waste being discharged into the river from a :

A

Soap and detergent detergent manufacturing factory.

B

Car battery manufacturing factory.

C

Alcohol manufacturing factory.

D

Plastic cups moulding factory.

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