2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    Amount of oxalic acid present in a solution can be determined by its titration with \[KMn{{O}_{4}}\] solution in the presence of\[{{H}_{2}}S{{O}_{4}}\]. The titration gives unsatisfactory result when carried out in the presence of \[HCl\] because \[HCl\]

    A)  gets oxidised by oxalic acid to chlorine

    B)  frunishes \[{{H}^{+}}\] ions in addition to those from oxalic acid

    C)  reduces permanganate to \[M{{n}^{2+}}\]

    D)  Oxidises oxalic acid to carbon dioxide and water

    Correct Answer: C

    Solution :

    Titration of oxalic acid by \[KMn{{O}_{4}}\] in the presence of \[HCl\] gives unsatisfactory result because \[HCl\]is a better reducing agent than oxalic acid and \[HCl\]reduces preferably permanganate ion \[\left( MnO_{4}^{-} \right)\] to \[M{{n}^{2+}}\].


You need to login to perform this action.
You will be redirected in 3 sec spinner