Advertisements
Advertisements
प्रश्न
Explain the term Electrophoresis
Advertisements
उत्तर
Electrophoresis:
The movement of colloidal particles under the influence of an applied electric field is known as electrophoresis. Positively charged particles move to the cathode, while negatively charged particles move towards the anode. As the particles reach oppositely charged electrodes, they become neutral and get coagulated.
संबंधित प्रश्न
What is the reason for the stability of colloidal sols?
Define the following term:
Zeta potential
Give reasons for the following observations:
Brownian movement provides stability to the colloidal solution.
Give reasons for the following observations: Leather gets hardened after tanning.
Define the following term : Brownian movement
Explain the term Tyndall effect.
What happens when a freshly prepared precipitate of Fe(OH)3 is shaken with a small amount of FeCl3 solution?
What happens when an emulsion is centrifuged?
A colloidal sol is prepared by the given method in the figure. What is the charge on hydrated ferric oxide colloidal particles formed in the test tube? How is the sol represented?
Which of the following statements are correct?
(i) Mixing two oppositely charged sols neutralises their charges and stabilises the colloid.
(ii) Presence of equal and similar charges on colloidal particles provides stability to the colloids.
(iii) Any amount of dispersed liquid can be added to emulsion without destabilising it.
(iv) Brownian movement stabilises sols.
Which phenomenon occurs when an electric field is applied to a colloidal solution and electrophoresis is prevented?
(i) Reverse osmosis takes place.
(ii) Electroosmosis takes place.
(iii) Dispersion medium begins to move.
(iv) Dispersion medium becomes stationary.
Why does leather get hardened after tanning?
Assertion: An ordinary filter paper impregnated with collodion solution stops the flow of colloidal particles.
Reason: Pore size of the filter paper becomes more than the size of colloidal particle.
Give reason for the following:
Lyophilic colloidal solutions are more stable than lyophobic colloidal solutions.
What is common in aqua sols and solid aerosols? How do they differ?
The important factor in the stabilization of a colloidal solution is ______
State the Hardy-Schulze rule.
What is electrophoresis?
Which of the following is a correct statement?
