You are provided with a mixture containing sand, iron filings, ammonium chloride, and sodium chloride. Describe the procedures you would use to separate these constituents from the mixture.

(N/A) The components of the given mixture can be separated by the following methods:
$(i)$ $Using$ $a$ $magnet$: Hovering a magnet over the mixture will result in iron filings getting stuck to the magnet. Thus, iron will be separated.
$(ii)$ $Sublimation$: The remaining mixture is heated in a china dish. Ammonium chloride is a sublime substance and hence it will evaporate without undergoing the liquid phase. The crust of ammonium chloride can be collected by placing an inverted funnel on top of the china dish.
$(iii)$ $Sedimentation,$ $decantation,$ $and$ $filtration$: The remaining mixture is dissolved in water. The mixture is allowed to settle for some time. Sand, being insoluble in water, settles at the bottom. The liquid is decanted into another beaker. Then, the liquid is filtered to remove any trace of sand in it.
$(iv)$ $Evaporation$: The liquid is now a solution of sodium chloride in water. This is heated in a beaker so that the water evaporates. Once all the water evaporates, we get sodium chloride in the beaker.