Question

A mixture of iron nails, salt, oil and water is provided to you. Give stepwise methods to separate each component from this mixture. (3 marks)

Answer 1

A mixture of iron nails, salt, oil and water can be separated by the following steps:
1) Iron nails can be handpicked or removed by a magnet by attracting it. (1 mark)
2) Oil can be removed by decantation method or separating funnel. (1 mark)
3) By evaporation method, evaporate the salt and water solution. Hence water can be condensed back leaving behind the salt at the bottom. (1 mark)