Question

25. A colloidal solution *
(1 Point)
Copper sulphate solution
Blood
Salt solution
Iron sand mixture​

Answer 1

Answer:

a solution of heterogeneous mixture in which collide are uniformly spread throughout the solution is called colloidal solution

its properties are:

1. it is a heterogeneous mixture

2. its particles cannot be seen through naked eyes

3. its particle size is between 10 to the power minus 7 to 10 to the power minus 9 mm

4. its particles allow beam of light to scatter

Answer 2

ANSWER
The Tyndall effect is shown by a colloidal solution.
Salt solution and copper sulphate solutions are true solutions.
Here milk and starch solutions are colloids therefore milk and the starch solutions will show the Tyndall effect.