Question

How would you obtain a sol of Agl, the particles of which migrate toward cathode under the electric field ?
A. By adding little excess of `KI` to `AgNO_(3)` solution
B. By adding little excess of `AgNO_(3)` to `KI` solution
C. By mixing equal volumes of `0.010 M AgNO_(3)` and `0.010 M KI`
D. None of these

Answer 1

Correct Answer - B
We want to prepare sol of Agl having positively charged particles, so a little excess of `Ag^(+)` should be added to `KI`.