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  3. 7th Class
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  5. Physical and Chemical Changes

7th Class Science Physical and Chemical Changes Question Bank Physical and Chemical Changes

  • question_answer
    When carbon dioxide is passed through lime water, it turns milky due to two formation of

    A) Calcium hydroxide

    B) Sodium hydrogen carbonate

    C) Calcium carbonate

    D) None of these

    Correct Answer: C

    Solution :

    Calcium carbonate


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