JEE Main & Advanced Chemistry Hydrogen & Its Compounds Question Bank Water or hydride of oxygen

  • question_answer Water is said to be permanently hard when it contains

    A) Sulphates of Mg and Ca

    B) Bicarbonates of Mg and Ca

    C) Sulphates of Cu and Hg

    D) Carbonates and bicarbonates of Mg and Ca

    Correct Answer: A

    Solution :

    Not Available

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