Alum is used for the purification of water.
Important Questions on Separation of Matter
Which of the following are NOT correct methods for separating the components of given mixtures?
I. The mixture of Iodine and sodium chloride by sublimation.
II. Plant pigments by chromatography.
III. Mixture of acetic acid and water by separating funnel.
IV. Oxygen, argon and nitrogen from air by fractional distillation.
Common salt, water and sand
You are given a mixture of ammonium chloride, sand and common salt for separation. A student first dissolved the mixture in water then filtered to remove sand.
(i) Will the student be able to separate ammonium chloride from sodium chloride?
(ii) Give a reason for your answer in (i).
(iii) Suggest an alternative procedure to separate the constituents of the mixture.
What method(s) of separation would you use, to separate peanuts and beans?
Name the methods you would use to separate the components from the following mixtures:
Iron filings are mixed with sulphur powder, what do you observe when
(i) a magnet is brought near the mixture.
(ii) the mixture is mixed with carbon disulphide.
Name the methods you would use to separate the components from the following mixtures:
(i) left on the filter paper
(ii) present in the filtrate
