Railways General Science & Technology General Concepts of Chemistry Sample Paper General Concepts of Chemistry Sample Test Paper-22

  • question_answer
    The molarity of a solution of \[N{{a}_{2}}C{{O}_{3}}\] having 10.6g/500ml of solution is

    A)  0.2 M  

    B)  2 M

    C)  20 M               

    D)  0.02 M

    Correct Answer: A

    Solution :

    [a] \[M=\frac{w\times 1000}{m.\,wt\times Volume\,\,in\,\,ml}=\frac{10.6\times 1000}{106\times 500}=0.2\,M.\]


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