In the ionic compound AB the ratio `r_(A+):r_(B-) is 0.414`. Indicate the correct statement among the following:

Options

A. Conductivity cells have cell constant values Independent of the solution filled into the cell
B. DC (direct current) is not used for measuring the resistance of a solution.
C. Kohlrausch law is valid both for strong and weak electrolytes.
D. The k decreases but `lambda_M` and `lambda_E` increase on dilution.

Answer

A,B,C,D

Explanation

cell constant =`l/A`
`K=Gsigma " " lambda_(M)=(1000K)/M, lambda_(N)=(1000K)/N`
On dilution `Gdarr K darr Mdarr Ndarr lambda_Muarr, lambda_N uarr`