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D And F Block Elements

JEE Main 2023 (Online) 29th January Evening Shift

MCQ+4 / -12023

An indicator 'X' is used for studying the effect of variation in concentration of iodide on the rate of reaction of iodide ion with \(\mathrm{H_2O_2}\) at room temp. The indicator 'X' forms blue coloured complex with compound 'A' present in the solution. The indicator 'X' and compound 'A' respectively are :

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