Question

Identify the term used to describe movement of colloidal particles under applied electric potential without using semipermeable membrane.

• A. Dialysis
• B. Electrophoresis
• C. Electroosmosis
• D. Brownian motion

Hint:

Movement of particles under an electric field with no membrane is electrophoresis.

Answer 1

The Correct Option is B

Step 1: Key words:
"Movement of colloidal particles", "applied electric potential" and "without a semipermeable membrane".

Step 2: Match:
Particles moving in an electric field is electrophoresis. If the medium moves instead, it is electroosmosis. If a membrane is used to purify the sol, it is dialysis, and random motion without a field is Brownian motion.

Step 3: Choose:
The description fits electrophoresis only.

Final Answer:
Electrophoresis fits the description, option (B). \[ \boxed{\text{Electrophoresis (B)}} \]