9. Some mixtures are given. Name the method to separate the components.
A to separate components from dyes
B salt solution
C petrol and kerosene
D kerosene and water
E sand and camphor
F iron powder and sand
Answers
Explanation:
a) Chromatography is a technique used for the separation of components of coloured mixtures.
b) Simple distillation is a method for separating the solvent from a solution
c) A mixture of two miscible liquids having a difference in their boiling points of more than 25 °C can be separated by simple distillation. The mixture of kerosene and petrol is taken in a distillation flask with a thermometer fitted in this method.
D) Separating funnel is used to separate the mixture of two immiscible liquids. Kerosene oil and water do not mix with each other and form two separate layers.
e) To separate the components of a mixture of sand, common salt and ammonium chloride (or camphor) by sublimation.
f) Wrap a magnet in plastic lunch wrap and move it through the mixture of the three solids. The iron filings will stick to the magnet. The filings can be removed by unwrapping the plastic from the magnet carefully! Mix the remaining salt and sand in water and stir.
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