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प्रश्न
The pH of water sample collected from a river was found to be acidic in the range of 3.5 – 4.5, on the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the pH of river water?
विकल्प
Soap and detergent factory
Lead battery manufacturing factory
Plastic cup manufacturing factory
Alcohol distillery
उत्तर
Lead battery manufacturing factory
Explanation -
Lead battery manufacturing factory produces sulphuric acid as an effluent to be discharged into the river. So, this factory will most likely cause the pH of water to become acidic.
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