The active ingredient in oxygen bleaches is
A) NaOCl.
B) NaBO₂ ∙ H₂O₂.
C) O₂.
D) Na₃PO₄.
Correct Answer:
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Q32: Which water softener "ties up" calcium ions
Q33: Optical brighteners work by
A)absorbing blue rays and
Q34: Optical brighteners are often added to
A)detergents.
B)soaps.
C)cosmetics.
D)They are
Q35: Cationic surfactants are not good detergents but
Q36: Which of the following categories of surfactants
Q38: Quaternary salts with two long carbon chains
Q39: Soaps are
A)anionic surfactants.
B)nonionic surfactants.
C)neutral surfactants.
D)positive surfactants.
Q40: Detergents are better cleaners than soaps in
A)hard
Q41: Which of the following is no longer
Q42: Which one of the following is NOT
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