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Railways R.R.C. (Chennai) Solved Paper Held on 2nd Shift 9-11-2014

  • question_answer
    Name the chemical used to test the presence of \[C{{O}_{2}}\] in exhaled air?

    A) Lime juice                     

    B) Lime water

    C) Lime stone                    

    D) Quick lime

    Correct Answer: B

    Solution :

    Lime water is used in chemistry labs to test for the presence of \[C{{O}_{2}}\]


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