Textile Engineering > GATE 2018 > Textile Wet Processing
Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
[a]: As the concentration of a surfactant in water increases, the surface tension of water initially decreases and then becomes constant.
[r]: After reaching the Critical Micelle Concentration, additional surfactant molecules do not further reduce the surface tension.
A
Both [a] and [r] are true and [r] is the correct reason for [a]
B
Both [a] and [r] are true but [r] is not the correct reason for [a]
C
Both [a] and [r] are false
D
[a] is true but [r] is false

Correct : a

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surface tension surfactant GATE Textile Engineering 2018 critical micelle concentration surface tension reduction textile engineering gate surfactant concentration effect surface tension properties GATE 2018 Textile Engineering

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