Question

in two separate jars or container, take ferrous sulphate solution (light green in colour) and a milk
solution diluted in water. Focus a torch on these jars in a dark place. Torch light is not visible in
ferrous sulphate solution. However the same can seen be in milk solution. Write your observation
with proper explanation.
​

Answer 1

Answer:-

Milk, a dispersed phase, when diluted in water - a dispersed medium, and when light is passed through the solution, scattering of light occurs because of the dispersed phase - milk.

Whereas the solution of ferrous sulphate which is light green in colour do not contain particles like milk in the first solution which would scatter light.

The tiny particles of milk which are diluted or added in the water contains proteins and fats, which scatter light and by which we can see the light visible from the side. And in the circuit solution there is no tiny particles of dispersed phase that is why we cannot see the scattering.

$\rule{200}2$

Colloidal Solution is the mixture of particles suspended in a liquid or a fluid.

The dispersed phase is the scattered particles present and the solution in which it is present is called the dispersed medium.

$\rule{200}2$

Answer 2

Answer:

$\huge\underline\mathfrak{\green{Answer :-} }\:$

Explanation:

Milk, a dispersed phase, when diluted in water -

• a dispersed medium, and when light is passed through the solution, scattering of light occurs because of the dispersed phase - milk.

• Whereas the solution of ferrous sulphate which is light green in colour do not contain particles like milk in the first solution which would scatter light.

• The tiny particles of milk which are diluted or added in the water