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Assertion (A): Micelles are formed by su...

Assertion (A): Micelles are formed by surfactant molecules above the critical micellization concentration `(CMC)` .
Reason(R): The conductivity of a solution having surfactant molecules decreases sharply at the `CMC` .

A

Statement 1 is True, statement 2 is True, statement 2 is a corect explanation for statement 1

B

Statement 1 is True, statement 2 is True, statement 2 is a not corect explanation for statement 1

C

Statement 1 is True, statement 2 is False

D

Statement 1 is False, statement 2 is True

Text Solution

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The correct Answer is:
B
Due to aggregation of ions at `CMC` , no. of ions per unit volume decreases and hence conductivity decreases.
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each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Micelles are formed by surfactant molecules above the critical micelle concentartion (CMC). STATEMENT-2: The conductivity of a solution having surfactant molecules decrease sharply at the CMC.

Below critical micelle concentration (CMC):

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