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NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    If 1 M and 2.5 litre NaOH solution is mixed with another 0.5 M and 3 litre NaOH solution, then molarity of the resultant solution will be

    A) 1.0 M               

    B) 0.73 M

    C) 0.80 M             

    D) 0.50 M

    Correct Answer: B

    Solution :

    \[\left( 2.5\times 1+3\times 0.5 \right)\,\,=\,\,{{M}_{3}}\times 5.5\] \[or\text{ }2.5+1.5\text{ }=\,\,{{M}_{3}}\times \,\,5.5\text{ }or\text{ }{{M}_{3}}=\,\,\frac{4}{5.5}\,\,=0.73\,M\]


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