Question:
The surfactant decreases the surface tension with the concentration of plateau. This plateau is related to
The surfactant decreases the surface tension with the concentration of plateau. This plateau is related to
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CMC is the "Saturation Point" where micelles start and surface tension stops falling.
Updated On: May 25, 2026
- HLB
- CMC
- Krafft point
- Cloud point
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The Correct Option is B
Solution and Explanation
Step 1: Concept
Surfactants reduce surface tension by adsorbing at interfaces.
Step 2: Meaning
As concentration increases, surface tension drops until it reaches a point where it remains relatively constant (plateau).
Step 3: Analysis
This point is the Critical Micelle Concentration (CMC). At this concentration, the surface is saturated with surfactant molecules, and additional molecules begin to form micelles in the bulk.
Step 4: Conclusion
The plateau in a surface tension vs. concentration plot identifies the CMC. Final Answer: (B)
Surfactants reduce surface tension by adsorbing at interfaces.
Step 2: Meaning
As concentration increases, surface tension drops until it reaches a point where it remains relatively constant (plateau).
Step 3: Analysis
This point is the Critical Micelle Concentration (CMC). At this concentration, the surface is saturated with surfactant molecules, and additional molecules begin to form micelles in the bulk.
Step 4: Conclusion
The plateau in a surface tension vs. concentration plot identifies the CMC. Final Answer: (B)
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