Home
Class 12
CHEMISTRY
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 correct explanation of Statement-1.

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation of Statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is Ture.

Text Solution

Verified by Experts

The correct Answer is:
B
The formation of micelles takes place above CMC. Hence, statement-1 is True, Each micelle contains at least 100 molecules. Hence, conductivity of the solution decreases sharply at the CMC. Hence statement-2 is also True but it is NOT the correct explanation of statement-1.
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    PRADEEP|Exercise ASSETION-REASON TYPE QUESTIONS (TYPE II)|13 Videos

  • SURFACE CHEMISTRY

    PRADEEP|Exercise VIII. (MULTIPLE CHOICE QUESTIONS)|4 Videos

  • SURFACE CHEMISTRY

    PRADEEP|Exercise INTEGER TYPE QUESTIONS|5 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    PRADEEP|Exercise Competition (FOCUS) JEE (Main and Advanced)/Medical Entrance SPECIAL (VIII. Assertion-Reason Type Questions)(Type II)|13 Videos

Similar Questions

Explore conceptually related problems

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):

At CMC, the surfactant molecules :