Advertisements
Advertisements
Question
Identify the dispersed phase and dispersion medium in the following colloidal dispersions.
- milk
- blood
- printing ink
- fog
Advertisements
Solution
| Colloidal dispersion | Dispersed phase | Dispersion medium |
| Milk | Liquid | Liquid |
| Blood | Solid | Liquid |
| Printing ink | Solid | Liquid |
| Fog | Liquid | Gas |
APPEARS IN
RELATED QUESTIONS
Comment on the statement that “colloid is not a substance but a state of substance”.
Write a note on Brownian motion.
Write a note on Types of emulsion.
Explain Electrophoresis diagramatically.
Explain Bredig’s arc method.
Explain the term emulsion and types of emulsions.
Explain micelle formation in a soap solution.
Draw labelled diagram of Bredig’s arc method.
Which of the following is multimolecular colloid?
Identify the CORRECT statements from the following.
i. The colour of colloidal dispersion depends on size of colloidal particles.
ii. Tyndall effect is used to distinguish between colloidal dispersion and true solution.
iii. Eosin and congo red are examples of negatively charged sols.
In coagulation of positively charged ferric hydroxide sol, the most and least effective ions are ____________ and ____________ respectively.
Which of the following is a heterogeneous mixture?
The order of coagulating power of following ions in the coagulation of a positive sol is:
i. \[\ce{PO^{3-}_4}\]
ii. \[\ce{SO^{2-}_4}\]
iii. \[\ce{[Fe(CN)6]^{4-}}\]
iv. \[\ce{NO^-_3}\]
Tyndall effect is observed due to ____________.
Tyndall effect is useful ______.
The movement of colloidal particles towards respective electrode under electric field is called ______.
Which of the following compounds forms a colloidal solution when dissolved in water?
In which of the following sols there is low affinity between dispersed phase and dispersion medium?
A colloidal system having a solid substance as a dispersed phase and a liquid as a dispersion medium is classified as ______.
Which of the following substances will precipitate the negatively charged emulsions?
(i) \[\ce{KCl}\]
(ii) glucose
(iii) urea
(iv) \[\ce{NaCl}\]
What is collodion?
A colloid is formed by adding \[\ce{FeCl3}\] in excess of hot water. What will happen if excess sodium chloride is added to this colloid?
How do emulsifying agents stabilise the emulsion?
Cloud is an example of
Fog is a colloidal solution of ______.
Which of the following is most powerful to coagulate the negative colloid?
Which of the following electrolytes will be most effective in coagulating negative sol?
Van Arkel's method of purification of metals involves converting the metal to a ______.
Starch is an example of which of the following type of colloid?
