Statement - I : Molar conductance increases with increase in dilution for strong electrolyte
Statement - II : As dilution increases, inter ionic attractions decreases in strong electrolytes

Molar conductivity increases with decrease in concentration or increase in dilution as the number of ions as well as the mobility of ions increases with increase in dilution. 
For strong electrolytes, the number of ions does not increase appreciably on dilution and  only mobility of ions increases due to decrease in interionic attractions.Therefore, ${\mathrm{\lambda }}_{\mathrm{M}}$ increases a little as shown in figure by a straight line.
For weak electrolytes, number of ions as well as mobility of ions increases on dilution which results in a very large increase in molar conductivity, especially at infinite dilution (i.e., concentration, C → 0) as shown by curve in figure.