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Assertion : The micelle formed by sodium...

Assertion : The micelle formed by sodium stereate in water has `-COO^(-)` groups at the surface.
Reason : Surface tension of water is reduced by the addition of stereate.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false

Text Solution

Verified by Experts

The correct Answer is:
B
Here both assertion and reason are correct but reason is not a correct explanation of assertion. Micelle is formed if molecules with polar and nonpolar ends assemble in bulk to give nonpolar interior and polar exterior.
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Assertion(A): The micelle formed by sodiumm stearate in water has -COO groups at the surface. Reason(R): Surface tension of water is reduced by addition of stearate.

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: The micelle formed by sodium sterate in water hasj- COO^(-) groups at the surface. STATEMENT-2: Surface tension of water is reduced by the addition of sterate.

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The surface tension of cold water is that of hot water