Write your observations when the following processes take place :
Q. Write your observations when the following processes take place :
(a) An aqueous solution of sugar is heated to dryness.
(b) A saturated solution of potassium chloride prepared at 608 °C is allowed to cool at room temperature.
(c) A mixture of iron filings and sulphur powder is heated strongly.
(d) A beam of light is passed through a colloidal solution.
(e) Dil – HCl is added to the mixture of iron and sulphur.
Ans.
(a) Sugar remains as residue in the form of a solid mass.
(b) Potassium chloride crystallises out.
(c) A black coloured compound is formed.
(d) The path of the light becomes visible.
(e) A colourless gas is evolved.
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