Which one of the following is used as a mordant in dyeing a – McqOptions

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1.	Which one of the following is used as a mordant in dyeing and tanning industry? [CDS]
A.	Magnesium oxide
B.	Magnesium carbonate
C.	Magnesium chloride
D.	Magnesium sulphate
Answer» B. Magnesium carbonate

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