How does the hard water affect the cleaning action of detergents?
In hard water, there is no precipitation of the anionic part of the detergent by Mg2+ or Ca2+ ion. Hence, no effect on the cleaning action of detergents.
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Give one example of a cationic detergents. Write its structure also.
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Give one advantage of detergents over soap.
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Name the most common food preserative. Why is it added to food?
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Name the class of drugs which is used against micro-organism as an alternatives to antibiotics.
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Name any two artifical sweeteners.
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Draw the structure of paracetamol and write its IUPAC name.
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Give one example each for bactericidal and bacteriostatic antibiotics.