Which of the following is/are the impurities in commercial hydrofluor – McqOptions

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1.	Which of the following is/are the impurities in commercial hydrofluoric acid that decreases corrosion of steel?
A.	Sulfuric acid
B.	Fluosilicic acid
C.	Neither sulfuric acid nor fluosilicic acid
D.	Both sulfuric acid and fluosilicic acid
Answer» E.

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