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NEET Sample Paper NEET Sample Test Paper-83

  • question_answer
    On mixing 300 g of \[25\,%\] solution and 400 g of \[40\,%\] solution by mass, a new solution is obtained. Calculate the mass percentage of solute in the new solution

    A)  66.43              

    B)  19.24

    C)  33.57              

    D)  87.23

    Correct Answer: C

    Solution :

    Mass of solute in I solution \[= \frac{25}{100} \times  300 g = 75 g\] Mass of solute in II solution \[= \frac{40}{100} \times  400 g = 160 g\] After mixing both solutions, Total mass of solute \[= \left( 75 +160 \right) g = 235 g\] Total mass of solution \[= \left( 300 + 400 \right) g = 700 g235\] Mass % of solute in final solution \[=\,\frac{235}{700}\times 100\] \[= \,33.57\,%\]


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