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Q.

In the soap micelles:


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a

The ionic end of the soap is on the surface of the cluster while the carbon chain is in the interior of the cluster

b

The ionic end of the soap is in the interior of the cluster and the carbon chain is out of the cluster

c

Both the ionic and carbon chain are in the interior of the cluster

d

Both the ionic and carbon chain are in the exterior of the cluster 

answer is A.

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Detailed Solution

concept - Soap is a water-soluble compound that is produced by a process called saponification by reacting sodium hydroxide or potassium hydroxide with vegetable or animal oil (fats).
Most impurities are greasy in nature and oil does not dissolve in water. The soap molecule forms sodium or potassium salts of long-chain carboxylic acids. In the case of soaps, the long carbon chain is water phobic and thus dissolves in oil and the ionic end being water-loving dissolves in water. Soap molecules thus form structures called micelles. In micelles, one end is towards the oil drop and the other end, which is ionic, is pointing out. It, therefore, forms an emulsion in water and helps dissolve dirt when washing clothes.
Soap is a type of molecule in which both ends(Hydrophilic end and Hydrophobic end) have different properties.
Being hydrophilic in nature, the ionic end is on the surface of the micelle and the chain is inside the micelle due to its hydrophobic nature.
Hence, the correct option is (1).
 
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