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.
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