RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    Which of the following does not used as primary standard in redox titration?

    A) \[{{K}_{2}}C{{r}_{2}}{{O}_{7}}\]          

    B)  \[KMn{{O}_{4}}\]

    C)  \[{{(COOH)}_{2}}\]         

    D)  Mohr's salt

    Correct Answer: D

    Solution :

     Mohr?s salt\[[FeS{{O}_{4}}{{(N{{H}_{4}})}_{2}}S{{O}_{4}}.24{{H}_{2}}O]\]is not useful as primary standard in redox titration.


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