Question

Three students took three mixtures A, B and C i.e. Milk of Magnesia, Starch Solution and Copper Sulphate solution respectively. Whose mixture:
(i) would not leave residue on filter paper after filtration?
(ii) would show the Tyndall effect?
(iii) would give a clear solution?
(iv) would settle down at the bottom when left undisturbed?
(v) could be filtered by filter paper?​

Answer 1

Answer:

True solution - Salt solution, copper sulphate solution, sugar and water solution, vinegar, air, brass.

Colloidal solution - Milk, Blood, Soap solution, starch solution, ink

Suspension - Milk of magnesia, chalk powder and water solution, flour in water, muddy water.

A true solution has extremely small particles which cannot reflect light, hence a true solution cannot exhibit ‘Tyndall effect’

Answer 2

Solution:

• True solution - Salt solution, copper sulphate solution, sugar and water solution, vinegar, air, brass.

• Colloidal solution - Milk, Blood, Soap solution, starch solution, ink

• Suspension - Milk of magnesia, chalk powder and water solution, flour in water, muddy water.

• A true solution has extremely small particles which cannot reflect light, hence a true solution cannot exhibit ‘Tyndall effect’