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  • Assertion The answer is the option (i): 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 concentration of detergents becomes equal to CMC.

In the following question, a statement of Assertion followed by a statement of Reason (R) is given. Choose the correct option out of the following choices:

Assertion :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 concentration of detergents becomes equal to CMC.

(i) Both Assertion and Reason are correct and the Reason is the correct explanation for Assertion.
(ii) Both Assertion and Reason arc correct but Reason is not the correct explanation for Assertion.
(iii) Assertion is correct but Reason is incorrect.
(iv) Both Assertion and Reason are incorrect.
(v) Assertion is incorrect but Reason is correct.

Answers (1)

The answer is the option (i) Clothes are cleaned by micellization, i.e. when concentration of detergents become equal to CMC. A lower CMC value means that the detergent is more economical.

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