- 1. Electrokinetics is a branch of physics that deals with the interactions between electric fields and moving fluids. It involves the study of phenomena such as electroosmosis, electrophoresis, and dielectrophoresis, where electric fields are used to manipulate the movement of fluids and particles. Applications of electrokinetics can be found in various fields including microfluidics, biotechnology, and environmental science, where precise control over fluid flow and particle transport is essential for conducting experiments or developing new technologies.
What is the phenomenon where charged particles move in a fluid under the influence of an electric field?
A) Electroosmosis
B) Electrophoresis
C) Electrochemistry
D) Dielectrophoresis
- 2. What is the process of moving particles by using a non-uniform electric field?
A) Electroplating
B) Electrodeposition
C) Electrolysis
D) Dielectrophoresis
- 3. What phenomenon occurs when electric current passes through a conducting solution, causing chemical reactions?
A) Electrolysis
B) Electrophoresis
C) Electroporation
D) Electroosmosis
- 4. Which law describes the relation between the cell potential and the equilibrium constant of a cell reaction?
A) Hess's law
B) Michaelis-Menten law
C) Faraday's law of electrolysis
D) Nernst equation
- 5. How is the surface charge of a particle related to its electrophoretic mobility?
A) Depends on the medium
B) Directly proportional
C) No relation
D) Inversely proportional
- 6. What is the technique used to deposit a thin layer of metal on an object using an electric current?
A) Electroplating
B) Electrolysis
C) Electrocatalysis
D) Electrophoresis
- 7. What is the term for the process of creating nanofibers using an electrically charged polymer solution?
A) Electrophoresis
B) Electrolysis
C) Electroplating
D) Electrospinning
- 8. What law describes the amount of a substance reacting at an electrode during electrolysis?
A) Fick's law
B) Faraday's law of electrolysis
C) Michaelis-Menten law
D) Nernst equation
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