One is through sublimation, where the mixture is heated and iodine gets converted into gaseous form, leaving behind the iron fillings.
The other is to get a magnet near the mixture and all the iron fillings get attracted to it while iodine will be left over
I think it is D but i'm not sure
hope I helped :)
The purpose of Sodium Chloride in the <span>Fischer </span>Esterification process is to separate the organic layer, then the process continues with drying the dichloromethane by distillation and <span>distill the remaining liquid ester.</span>