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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` .

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The correct Answer is:
B
Both assertion and reason are correct. A micelle of formed when a veriety of molecules such as soap and deterents are added to water. The molecule may be a fatty acid,a sltt of fatty acid (doap), phospholipid, or other similar molecule. The non-polar tails of the molecule chump into the centre of a ball-like structure called a micelle because they are hydrophobic. At some concentration, the surface becomes completely loaded with surface and any further additions arrange as micelles. This concentration is called the critical micellization concentration (CMC). This cause a decreases in the number of free ions to conduct electricity. thus conductivity decreases at CMC.
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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.

At the critical micelle concentration, the surfactant molecules :

(A) surfactent molecules form micelles above the critical micelle concentration (CMC).
(R) The conductance of solution of surfactant molecules decreases sharply at the (CMC).

At the critical micelle concentration, the surfactant molecules

क्रंतिक मिसेल सान्द्रण (CMC ) पर सतह सक्रीय ( surfactant ) अणु निम्नलिखित प्रक्रिया प्रदर्शित करते है -

At CMC, the surfactant molecules :

Among the following , the surfactant that will form micelles in aqueous solution at the lowest molar concentration at amibemt conditions, is :

क्रान्तिक मिसेल सांद्रता पर सरफेक्टेंट अणु

वक्तव्य I सर्फ के अणु क्रान्तिक मिसेल सान्द्रता (CMC) के ऊपर मिसेल बनाते हैं|
वक्तव्य II सर्फ के अणुओं वाले विलयन की चालकता (CMC) पर घटती है|

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.

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)If both (A) and (R) are correct, and (R) is the correct explanation of (A).
(b)If both (A) and (R) are correct, but (R) is not the correct explanation of (A).
(c)If (A) is incorrect, but (R) is correct.
(d)If both (A) and (R) are incorrect.

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