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UPSC Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank Environmental Chemistry

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          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

    Correct Answer: A

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