Question

1. The solute particles did not dissolve and the particles are visible to naked eye. Such heterogeneous

mixtures are called [ ]

a) Emulsions b) True solutions c) Suspensions d) Colloidals 2. Which of the following is an emulsion ? [ ]

a) Oil in water b) Kerosene in water c) Salt in water d) Both a and b

3. The colloidal solutions are heterogeneous in nature and always consists of atleast two phases.

What are they ? [ ]

a) Disperse phase b) Dispersion medium c) Solution d) Both a and b

4. What kind of solution is milk ? [ ]

a) Suspension b) Colloid c) True solution d) Alloy

5. What kind of a colloidal solution is an emulsion ? [ ]

a) Solid dispersed in solid b) Liquid dispersed in liquid

c) Gas dispersed in liquid d) Liquid dispersed in solid

6. In which of the following does scattering of light takes place ? [ ]

a) Electrolytic solutions b) Colloidal solutions

c) Electro dialysis d) Alcohols

7. What can be observed when sunlight is passed through a colloidal solution ? [ ]

a) Adsorption b) Coagulation c) Tyndall effect d) Brownium motion

8. The size of colloidal particles are [ ]

a) 1 - 100 nm b) 100 - 1000 nm c) > 1000 nm d) < 1 nm

9. Which of the following pairs of colloidal solutions have dispersed phase as liquid and dispersing

medium as gas ? [ ]

a) Fog, mist b) Butter, milk c) Fog, smoke d) Smoke, foam

10. Which of the following, the components can be separated from the mixture by the process of the

filteration or decantation. [ ]

a) Colloids b) Suspensions c) True solutions d) All​

Answer 1

Answer:

1.suspensions

2. Both a and b

3. Both a and b

4. Colloid

5.liquid dispersed in liquid

6. Colloidal solutions

7. Tyndall effect

8.1- 100nm

9. Smoke and foam

10. Suspensions

Explanation: