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D and F Block Elements question

2023 · 29 Jan · Shift 2 · Q13
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D and F Block Elements question

2023 · 29 Jan · Shift 2 · Q13

JEE MainChemistryD and F Block ElementsMCQ+4 / −1
An indicator 'X' is used for studying the effect of variation in concentration of iodide on the rate of reaction of iodide ion with H2O2\mathrm{H_2O_2}H2​O2​ 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 :
  1. A
    Methyl orange and H2O2\mathrm{H_2O_2}H2​O2​
  2. B
    Methyl orange and iodine
  3. C
    Starch and H2O2\mathrm{H_2O_2}H2​O2​
  4. D
    Starch and iodine
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