Suggest separation technique one would need to employ to separate the following mixtures Mercury and water (b) Potassium chloride and ammonium chloride (c) Common salt, water and sand (d) Kerosene oil, water and salt.

(a) Separation by using separating funnel

(b) Sublimation

(c) Filtration to separate sand followed by evaporation/distillation

(d) Separation by using separating funnel to separate kerosene oil followed by evaporation or distillation.