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Chemistry
Which of the following acts as a self-indicator?
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Q. Which of the following acts as a self-indicator?
Redox Reactions
A
$K_2Cr_2O_7$
8%
B
$KMnO_4$
76%
C
Oxalic acid
8%
D
Iodine
7%
Solution:
$KMnO_4$ is purple coloured and it changes its colour during titration, hence it is a self-indicator.