Question

1. Name the methods of separating the components of the following mixtures:
(0) Oil and water
(ii) Iron filings and sand
(iii) Camphor from common salt (iv) Water and alcohol
(v) Dyes from black ink
(vi) Petrol and kerosene
(vii) Solid dye from fountain pen
ink
(vii) Sulphur from a solution of sulphur in carbon disulphide
2. Name the method or methods for the following separations:
(0) Pure water from sea water
(ii) Kerosene from a mixture of kerosene and petrol
(ii) Gold from a mixture of gold and copper filings
3. How will you obtain a sample of sulphur from a mixture of carbon and sulphur?
4. Name the process employed to separate the coloured dyes in black ink.
5. You are given a mixture of sulphur, charcoal and potassium chloride, State briefly how
would you separate each component.
6. Name the technique for the separation of the following
(1) Copper sulphate crystals from its aqueous solution
(ii) Benzene (b.pt. 80°C) from a solution of benzene and toluene (b.pt. 100 °C).
(iii) Copper turnings from a mixture of copper turnings and iron filings,
in chemistry ​

Answer 1

Answer:

) Sodium chloride from its solution in water Evaporation.

(b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride Sublimation.

(c) Small pieces of metal in the engine oil of a car Filtration

(d) Different pigments from an extract of flower Chromatography.

(e) Butter from curd Centrifugation.

(f) Oil from water Using separating funnel

(g) Tea leaves from tea Filtration

(h) Iron pins from sand Magnetic Separation

(i) Wheat grains from husk Winnowing

(j) Fine mud particles suspended in water Centrifugation.