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NEET Sample Paper NEET Sample Test Paper-30

  • question_answer
    An aqueous solution of \[6.3\text{ }g\] oxalic acid dehydrate is made up to \[250\text{ }ml.\]The volume of \[0.1\text{ }N\] sodium hydroxide required to completely neutralise 10 ml of this solution is:

    A)  \[40\text{ }ml\]             

    B)  \[20\text{ }ml\]

    C)  \[10\,\,ml\]                  

    D)  \[4\,\,ml\]

    Correct Answer: A

    Solution :

    \[W=\frac{NEV}{1000}\] \[N=\frac{W\times 1000}{E\times V}=\frac{6.3\times 1000}{63\times 250}=0.4N\] \[{{N}_{1}}{{V}_{1}}={{N}_{2}}{{V}_{2}}\] \[0.1\times {{V}_{1}}=0.4\times 10\] \[{{V}_{1}}=\frac{0.4\times 10}{0.1}\] \[{{V}_{1}}=40\,ml\]


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