7th Class Science Acids, Bases and Salts Question Bank Acids, Bases and Salts

  • question_answer 96) The waste from a paper factory contains high amount of hydrochloric acid. How should we treat the waste, before disposal, to make it safe?

    A) Treat it with chemicals containing sodium hydroxide

    B) Treat it with chemicals containing sulphuric acid

    C) Treat it with chemicals containing sodium chloride

    D) Treat it with pure hydrochloric acid

    Correct Answer: A

    Solution :

    Sodium hydroxide is a base which can neutralize the acids present in the waste and make it safe.

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