11th Class Chemistry Alkali Metals Question Bank Alkali Metals

  • question_answer Potash alum is a [CPMT 1986; MNR 1981]

    A) Complex salt

    B) Acid salt

    C) Double salt

    D) Normal salt

    Correct Answer: C

    Solution :

    \[{{K}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\] potash alum it is a double salt. 

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