Which one is the strongest electrolyte among the following?

The ionisation constant of a weak acid $(HA)$ in terms of molar conductivity at infinite dilution $(\Lambda _m^\infty)$ and molar conductivity at concentration $C$ $(\Lambda _m)$ is given by:

In a weak electrolytic solution,the degree of ionization:

What is the concentration of $[H_3O^{+}]$ ion in $mol \ L^{-1}$ of $0.001 \ M$ acetic acid $(\alpha = 0.134)$?

$HCN$ is $1 \%$ ionized in its $0.2 \ M$ aqueous solution. At the same temperature,what would be its percent ionization in its $0.02 \ M$ aqueous solution?

The name $Ostwald$ is associated with: