BHU PMT BHU PMT (Mains) Solved Paper-2010

  • question_answer
    A solution contains 10 mL of\[0.1\text{ }N\text{ }NaOH\]and 10 mL of\[0.05\text{ }N{{a}_{2}}S{{O}_{4}}\]. pH of this solution is

    A)  7                                            

    B)  less than 7

    C)  greater than 7                 

    D)  zero

    Correct Answer: C

    Solution :

                     \[N{{a}_{2}}S{{O}_{4}}\]is a neutral salt while\[NaOH\]is a strong alkali. Thus, the pH of solution containing\[NaOH\]and\[N{{a}_{2}}S{{O}_{4}}\]is greater than 7.


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