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Assertion (A) Detergents with low CMC ar...

Assertion (A) Detergents with low CMC are more economical to use.
Reason (R) Cleansing action of detergents involves the formation of micelles. These are formed when the cocentration of detergents becomes equal to CMC.

A

Assertion and reason both are correct and the reason is correct explanation of assertion.

B

Assertion and reason both are correct but reason does not explain assertion.

C

Assertion is correct, but reason is incorrect.

D

Assertion is incorrect, but reason is correct.

Text Solution

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The correct Answer is:
To analyze the given assertion and reason, we will break down the concepts involved in the statement regarding detergents and their cleansing action. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "detergents with low CMC are more economical to use." - CMC stands for Critical Micelle Concentration. It is the concentration of detergent molecules in a solution above which micelles start to form. 2. **Understanding the Reason**: - The reason states that "cleansing action of detergents involves the formation of micelles." - Micelles are aggregates of detergent molecules that form when the concentration of detergent exceeds the CMC. They encapsulate dirt and oil, allowing them to be washed away. 3. **Linking Assertion and Reason**: - Detergents with low CMC require a smaller amount of detergent to reach the concentration needed for micelle formation. This means that less detergent is needed to achieve effective cleansing action. - Therefore, using detergents with low CMC can be more economical because they are effective at lower concentrations. 4. **Conclusion**: - Both the assertion and the reason are correct. The reason provides a valid explanation for why detergents with low CMC are more economical to use. ### Final Answer: The correct option is: **Assertion and reason both are correct and the reason is the correct explanation of assertion.** ---
To analyze the given assertion and reason, we will break down the concepts involved in the statement regarding detergents and their cleansing action. ### Step-by-Step Solution: 1. **Understanding the Assertion**: - The assertion states that "detergents with low CMC are more economical to use." - CMC stands for Critical Micelle Concentration. It is the concentration of detergent molecules in a solution above which micelles start to form. ...
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