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JEE Main & Advanced JEE Main Paper (Held On 22 April 2013)

  • question_answer
    Flocculation value of \[BaC{{l}_{2}}\] is much less then that of \[KCl\] for sol A and flocculation value of \[\operatorname{N}{{\operatorname{a}}_{2}}\operatorname{S}{{\operatorname{O}}_{4}}\] is much less than that of \[\text{NaBr}\]for sol B. The correct statement  among the following is:     JEE Main  Online Paper (Held On 22 April 2013)

    A)  Both the sols A and B are negatively charged              

    B)  Sol A is positively charged and Sol B is negatively charged

    C)  Both the sols A and B are positively charged

    D)  Sol A is negatively charged and sol B is positively charged

    Correct Answer: B

    Solution :

     In first case the given compounds have same anion but different cations having different charge hence they will precipitate negatively charged sol i. e. ?A?. In second case the given compounds have similar cation but different anion with different charge. Hence they will precipitate positively charged sol. i.e. 'B?.


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