False statement is

For an ideal solution, $∆{\mathrm{G}}_{\mathrm{mix}} = 0, ∆{\mathrm{S}}_{\mathrm{mix}} = 0$

For an ideal solution,$∆{\mathrm{H}}_{\mathrm{mix}} = 0, ∆{\mathrm{V}}_{\mathrm{mix}} = 0$

100% ionized 0.05M NaCl  is isotonic with 0.1M urea

Molal elevation constant does not depend on molality of a solution