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In the reaction Cr(2) O(7)^(2-) + 14 H...

In the reaction
`Cr_(2) O_(7)^(2-) + 14 H^(+) + 6I^(-) to 2 Cr^(3+) + 3H_(2)O + I_(2)` Wchich element is reduced?

A

H

B

Cr

C

O

D

I

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -1
  1. The oxidation numbers of Mn in MnO(4)^(-) and [Mn(CN)6]^(3-) are respe...

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  2. Number of moles of hydrogen peroxide that can oxidise one mole of lead...

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  3. In the reaction Cr(2) O(7)^(2-) + 14 H^(+) + 6I^(-) to 2 Cr^(3+) + 3...

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  4. In which of the following compounds transition metal is in zero oxidat...

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  5. C(2)H(4)+H(2) to C(2)H(6) In terms of redox reaction notations A) ...

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  6. Which group P-block elements show highest positive oxidation state ?

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  7. 4ClO(3(aq))^(-)to3ClO(4(aq))^(-)+Cl((aq))^(-) is an example of

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  8. Excess of KI reacts with CuSO(4) solution and then Na2S2O3 solution is...

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  9. Six grams each of magnesium and oxygen was allowed to react. Assuming ...

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  10. Which one of the following is an example of disproportionation reactio...

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  11. The strength of an aqueous solution of I(2) can be determined by titra...

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  12. In the standardization of Na2S2O3 using K2Cr2O7 by iodometry, the equi...

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  13. The role of starch in iodometric titrations is that

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  14. Number of moles of FeSO4 that can reduce one mole of permanganate in a...

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  15. Equivalent weight of As(2)O3 in the following equation As(2)O3 +2I(2) ...

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  16. Which of the following statement is correct for a galvanic cell?

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  17. In a electrochemical cell

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  18. The electrode potential of an electrode is

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  19. Which of the following may not be present in all galvanic cells

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  20. Daniel cell is shown as

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