neveminind has higher boiling point than "mind" because you made a soultion. you disolve "never" in "mind". just remember, if you disolve more "never" the boiling point will increase and freezing point will decrease.
Another concept you have to know: soultion will boil when the vapour pressure becomes equal to atmospher pressure, vapour pressure for soultion will decrease compare to pure solvent.( nevermind has lower vapour pressure compare to mind)
hope it helped.