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Question
The substance that helps water to remove dirt from the surface of materials is called ______.
Options
white cement
soap
detergent
wearing of bones
tooth decay
hard
soft
Portland
fatty acid
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Solution
The substance that helps water to remove dirt from the surface of materials is called detergent.
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Answer the following question using the data given below:
Assertion: Detergents are more effective cleansing agents than soaps in hard water.
Reason: Calcium and magnesium salts of detergents are water-soluble.
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