Assertion : The micelle formed by sodium stea | vedclass

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(B) The assertion is correct because in a micelle,the hydrophilic $-COO^{-}$ heads are oriented towards the water at the surface,while the hydrophobic

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) The assertion is correct because in a micelle,the hydrophilic $-COO^{-}$ heads are oriented towards the water at the surface,while the hydrophobic hydrocarbon tails point inward.The reason is also correct because the addition of soap (sodium stearate) acts as a surfactant,which lowers the surface tension of water.However,the reduction of surface tension is a property of surfactants,not the direct explanation for why the $-COO^{-}$ groups are at the surface of the micelle. The orientation is due to the amphiphilic nature of the molecules.

List-$I$	List-$II$
$A$. Osmosis	$I$. Solvent molecules pass through semi permeable membrane towards solvent side.
$B$. Reverse osmosis	$II$. Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes.
$C$. Electro osmosis	$III$. Solvent molecules pass through semi permeable membrane towards solution side.
$D$. Electrophoresis	$IV$. Dispersion medium moves in an electric field.

Assertion : The micelle formed by sodium stearate in water has $-COO^{-}$ groups at the surface.
Reason : Surface tension of water is reduced by the addition of stearate.

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Assertion : The micelle formed by sodium stearate in water has $-COO^{-}$ groups at the surface.Reason : Surface tension of water is reduced by the addition of stearate.