Question

Assertion: Detergents with low CMC are more economical to use.

Reason: Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.

विकल्प

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

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

• Assertion is correct but reason is incorrect.

• Both assertion and reason are incorrect.

• Assertion is incorrect but reason is correct.

Answer 1

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

Explanation:

Detergents with low CMC are more economical to use as they involve formation of micelle which is used for cleaning of oil and dirt from our cloth. Micelle formation takes place when the concentration of the detergent becomes equal to the CMC.