2. Solved Papers
  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2001

  • question_answer
    Which of the following indicator will be used in the following reaction? \[KMn{{O}_{4}}+F{{e}^{2+}}\xrightarrow[{}]{{}}\]Product

    A)  Methyl red

    B)  Phenolphthalein

    C)  Phenol red

    D)  Self indicator

    Correct Answer: D

    Solution :

     The violet colour of\[KMn{{O}_{4}}\]solution becomes colourless as it is reduced in\[M{{n}^{2+}}\]which acts as self-indicator. \[\underset{violet}{\mathop{MnO_{4}^{-}}}\,\xrightarrow[{}]{{}}\underset{colourless}{\mathop{M{{n}^{2+}}}}\,\]


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