How would you separate the mixtures given in table? Class 9
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How would you separate the mixtures given in table? Class 9
Question 1.
How would you separate the mixtures given in table? Mention the reason for choosing your method. If a mixture cannot be separated, explain why. Class 9
Answer:
| Mixture | Method of separation | Reason for selection |
| Mud from muddy water | Filtration | Mud particles (> 1000 nm) settle and can be trapped by filter paper |
| Plasma from other components in the blood sample | Centrifugation | Blood cells heavier than plasma: centrifugation separates by density |
| Naphthalene and sand | Sublimation | Naphthalene sublimes on heating, sand does not |
| Chalk powder and common salt | Dissolution + Filtration | Salt dissolves in water, chalk powder does not (insoluble) |
| Common salt and water | Evaporation | Salt left behind when water evaporates |
| Oil from water | Separating funnel | Oil (less dense) floats on water: separates into layers |
| Pigments of the flower | Chromatography | Different pigments have different solubilities and travel different distances |