Question

separation technique used to separate ammonium chloride , sand , sodium chloride , iron fillings

Answer 1

Heat the mixture and the ammonium chloride will sublime.

Now use a magnet to remove iron fillings.

Now disprove it in water where sodium chloride gets dissolved and sand is left behind.

Use former paper to remove sand.

Evaporate the water to get sodium chloride.

Note: To collect ammonium chloride use an inverted funnel with sand paper as it is in the text book.