Colloid

What is called a dispersion medium?

• a) It is where the dispersed phase settles

• b) It is where the solute particles settle

• c) It is where the dispersed phase is suspended

• d) It is the primary medium

What is called a dispersion phase?

• a) It is the main layer

• b) It is the secondary layer in which the colloidal particles are dispersed

• c) It is the secondary layer

• d) It is the basic colloidal layer

Which of the following form of colloid is considered to be the lightest colloid?

• a) Gaseous foam

• b) Solid sol

• c) Sol

• d) Liquid sol

Which of the following form of colloid is considered to be the strongest colloid?

• a) Gel

• b) Foam

• c) Solid sol

• d) Liquid sol

When the tiny particles of a substance are dispersed through a medium then the mixture is called

• alloys

• amalgams

• suspension

• colloid

The particle size in suspension is

• less than 10³ nm

• 10² nm

• greater than 10³ nm

• 10 nm

Colloids can

• scatter light

• not scatter light

• absorb heat

• evolve heat

What is the size of colloidal particles?

• a) 10-20 nm

• b) More than 20 nm

• c) Less than 10 nm

• d) 30 to 50 nm

Which of the following is a characteristic of a colloid?

• a) It forms 2 layers with a solution

• b) It forms turbid layers

• c) It forms heterogeneous layer

• d) It forms a homogeneous layer

Where does colloidal solution find application in?

• a) In milk industries

• b) In chromatic chemical industries

• c) In crystallography

• d) In textiles