Question

5.
You are provided with a mixture containing sand, iron fillings, ammonium chloride
and sodium chloride. Describe the procedures you would use to separate the
constituents form the mixture​

Answer 1

Answer:

Explanation:

1.Removing iron filings from the mixture by magnetic separation. Take the mixture in a petri dish and roll a bar magnet over it. Iron filings will get attach to the magnet and thus separate from the mixture.

2.Removing ammonium chloride by sublimation Transfer the remaining mixture into China dish and heat it. On heating, ammonium chloride sublimes and solidifies on condensation. The mixture containing sand and sodium chloride left behind in the China dish.

3.Removing sand by filtration Make a solution of sand and sodium chloride in water. Filter the solution. Sodium chloride will dissolve in water and sand is left as residue on the filter paper.

4.Evaporate the filtrate to dryness to get sodium chloride or by crystallisation.

Answer 2

A postcard or post card is a rectangular piece of thick paper or thin cardboard intended for writing and mailing without an envelope. ... While a postcard is usually printed by a private company, individual or organization, a postal card is issued by the relevant postal authority.