1) They turn KMnO4solution from purple to colourless,
2) They turn KCr2O7 solution from orange to green.
3) They turn reddish brown Fe3+ solution to greenish solution.
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action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /usr/www/users/mywaecf/KEYPOINT/wp-includes/functions.php on line 61211) They turn KMnO4solution from purple to colourless,
2) They turn KCr2O7 solution from orange to green.
3) They turn reddish brown Fe3+ solution to greenish solution.