Which from the following concentrations of a weak electrolyte solution exhibits maximum molar conductivity (in $M$)?

How much water must be added to $300 \ mL$ of $0.2 \ M$ solution of $CH_3COOH$ $(K_a = 1.8 \times 10^{-5})$ for the degree of ionisation $(\alpha)$ of the acid to double (in $mL$)?

At $25\,^{\circ}C$,the molar conductance of a $0.1\, M$ aqueous solution of ammonium hydroxide is $9.54\, \Omega^{-1}\, cm^2\, mol^{-1}$ and at infinite dilution,its molar conductance is $238\, \Omega^{-1}\, cm^2\, mol^{-1}$. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is ............ $\%$

Which one is the strongest electrolyte among the following?

State Ostwald's dilution law.

Which of the following is a poor conductor of electricity?