On adding `AgNO_(3)` solution into KI solution, a negatively charged coll oidal sol is obtained when they are in :

Options

A. 50 mL of `0.1 MAgNO_(3) +50 `mL of 0.1 MKI
B. 50 mL of `0.1 MAgNO_(3) +` 50 mL of 0.2 MKI
C. 50 mL of `0.2 MAgNO_(3) +` 50 mL of0.1 MKI
D. none of these

Answer

B

Explanation

`AgNO_(3)+KItoAgI(s)+KNO_(3)`
`underset(0)(5)xx10^(-3)underset(5xx10^(-3))(10xx10^(-3))`
`AgI(s)+I^(-)toAgI:I^(-)`
Negative charge colloids.