Assertion :Detergents and soaps both are different. Reason: Soap contains an aliphatic or straight chain carbon skeleton, with a carboxylic acid group at its end. Instead of a carboxylic acid group, the detergent may contain a sulphate or sulphonate group. In addition, detergents can contain an aromatic ring or rings.

Read the above assertion and reason and choose the correct statement regarding it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Detergents contain anionic part at the end which is sulphate or sulphonate group and they are responsible for the cleansing action. Also, detergents can contain an aromatic ring or rings.

Soap is prepared from fatty acid and it may contain an aliphatic or straight carbon chain, in the end, it has a carboxylic acid group.

Detergents are effective cleaners in both hard and soft water. Soaps form scum in hard water. Detergents do not form scum in hard water.

Thus, Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

Hence, the correct option is $A$

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