1.

When `9.0ml` of arsenius sulphide sol and `1.0ml` of `1.0xx10^(-4)M BaCl_(2)` are mixed turbidity due to precipitation just appears after 2 hours. The effective ion and its coagulating value are respectively.A. `Cl^(-),10"m mol"//L`B. `Cl^(-),20"m mol"//L`C. `Ba^(2+),10"m mol"//L`D. `Ba^(2+),20"m mol"//L`

Answer» Correct Answer - 3
Conc. Of `Ba^(2+)=(10^(-4))/(10xx10^(-3))M=10^(-2)M=10"m mole"//L`


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