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

  • question_answer Rain becomes acidic:

    A) because excess of carbon dioxide present in air get dissolved in rain drops to form carbonic acid.

    B) oxides of nitrogen and sulphur present in air dissolve to form respective acids.

    C) Both the above are correct

    D) None of these is correct

    Correct Answer: B

    Solution :

    Oxides of nitrogen and sulphur dissolves in rain water to form corresponding acids. This result into add rain.


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