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      Question

      The effluents of which among the following industries

      are considered to be the main cause for lowering the pH value of river water?
      A Alcohol distillery industries Correct Answer Incorrect Answer
      B Plastic cup manufacturing industries Correct Answer Incorrect Answer
      C Soap and detergent industries Correct Answer Incorrect Answer
      D Lead battery manufacturing industries Correct Answer Incorrect Answer

      Solution

      The correct answer is A

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