Question

Which of the following mixtures is unstable:
a) water+sugar
b) water+sand
c) water+salt
d) water+copper sulphate ​

Answer 1

Answer:

water + sand

Explanation:

As sand is insoluble in water it will not form a stable mixture.

Answer 2

a) if you mix the water and sugar the water and sugar will be dissolved

b) if you mix the sand in water it remains as a mixture but but will never dissolves

c) mix water and salt it will dissolves and it me it will be a mixture which can be easily extracted through heating

d) water in copper sulphate solution is dissolved you cannot extend the copper sulphate from the water unless if you heat alone copper sulphate it becomes white if you are few drops of water it becomes blue

answer is b