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JEE Main & Advanced JEE Main Paper (Held on 08-4-2019 Afternoon)

  • question_answer
    The strength of 11.2 volume solution of \[{{H}_{2}}{{O}_{2}}\] is : [Given that molar mass of \[H=1g\,mo{{l}^{-1}}\]and \[O=16g\,mo{{l}^{-1}}\]] [JEE Main 8-4-2019 Afternoon]

    A) 13.6%             

    B) 3.4%

    C) 34%    

    D)   1.7%

    Correct Answer: B

    Solution :

    Volume strength=11.2 \[\times \] molarity= 11.2 \[\Rightarrow \] molarity = 1 M \[\Rightarrow \] strength = 34 g/L \[\Rightarrow \] \[%\text{w/w=}\frac{34}{1000}\times 100=3.4%\]


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