Which of the following colour changes shown during redox titrations is not correct ?A. `Cr_(2)O_(7)^(2-)` oxidises the indicator diphenylamine to produce blue colour showing end point.B. Iodine formed by oxidation of `I^(-)` ions gives blue colour with starch showing end point.C. `KMnO_(4)` in the form of `MnO_(4)^(-)` ions gives pink colour showing end point.D. Thiosulphate ions `(S_(2)O_(3)^(2-))` give blue colour showing end point.

Which of the following colour changes shown during redox titrations is

1.	Which of the following colour changes shown during redox titrations is not correct ?A. `Cr_(2)O_(7)^(2-)` oxidises the indicator diphenylamine to produce blue colour showing end point.B. Iodine formed by oxidation of `I^(-)` ions gives blue colour with starch showing end point.C. `KMnO_(4)` in the form of `MnO_(4)^(-)` ions gives pink colour showing end point.D. Thiosulphate ions `(S_(2)O_(3)^(2-))` give blue colour showing end point.
Answer» Correct Answer - D Thiosulphate ions do not act as indicator and do not indicate end point by change in colour.

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