Question

Select colloidal solution from the following- soap + water, salt + water, sand + water, fog.

Give me a Right answer please​

Answer 1

Answer:Soaps make maximum foam in soft water.

Rain water is soft because it doesnot contain dissolved salts of calcium and magnesium. Whereas river water, well water and salt water are hard due to presence of dissolved salts.

So, soap will form maximum foam with rain water.

Explanation:

Answer 2

The colloidal solution from the given options is soap + water.

• Colloidal solutions are the mixtures where the elements are regularly suspended in a fluid.
• The solution that consists of soap is called a soap solution. This is called a colloidal solution, because it has a medium of dispersion and also dispersed phase.
• Soap is a colloid consisting of tiny materials that disperse in water. Also, Soaps make up maximum foam in soft water.