Which among the following statement is NOT true about homologous series of organic compounds?

If 6 g of solute dissolved in 100 g of water lowers the freezing point by 0.93 K. What is molar mass of solute? (K$$_\mathrm{f}$$ = 1.86 K kg mol$$^{-1}$$)

Which from following electrolytes, molar conductivity is determined using Kohlrausch theory?

How many lattice points are present in a face centred cubic unit cell?