If you add salt to liquid nitrogen,would it turn into a superconductor?

[ForumFire]

I was wondering also if you put a magnet above it, then lifted the magnet up,would the nitrogen and salt come up too?

 

[mgb_phys]

Unfortunately not. Only a few special materials become superconducting at LN2 temperatures and salt isn't one of them.
In addition superconductors aren't attracted to magnets - they tend to repel magnetic fields.