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In which of the following reaction there...

In which of the following reaction there is no change in oxidation state

A

`2H_(2)O_(2) to 2H_(2)O+O_(2)`

B

`CaCO_(3) to CaO+CO_(2)`

C

`2H_(2)O to 2H_(2)+O_(2)`

D

`2HgO to 2Hg+O_(2)`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-STOICHIOMETRY-Objective Exercise -1
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  2. Which reactions are useful to prepare Hydrogen in the laboratory

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  3. In which of the following reaction there is no change in oxidation sta...

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  4. In C+H(2)OtoCO+H(2),H(2)O acts as

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  5. The reaction is Decomposition but it's not redox reaction

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  6. Which one of the following generally gets displaced by more electro po...

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  7. KIO(3)+5KI+6HCl to 3I(2)+6KCl+3H(2)O Correct statement of this reactio...

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  8. When three moles of ozone completely reacts with SO(2), the number of ...

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  9. In the reaction SO(2)+1/2 O(2) overset(V(2)O(5))to SO(3) the change in...

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  10. In the reaction 3Br(2) + 6CO(3)^(2-) + 3H(2)OrarrBr^(-) + BrO3 + 6HCO...

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  11. The oxidation numbers of Mn in MnO(4)^(-) and [Mn(CN)6]^(3-) are respe...

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

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

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

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

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

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  17. 4ClO(3(aq))^(-)to3ClO(4(aq))^(-)+Cl((aq))^(-) is an example of

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

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

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

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