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Which of the following is a redox reacti...

Which of the following is a redox reaction ?

A

`NaCl+KNO_(3)rarr NaNO_(3)+KCl`

B

`CaC_(2)O_(4) +2HCl rarr CaCl_(2)+H_(2)C_(2)O_(4)`

C

`Mg(OH)_(2)+2NH_(4)Cl rarr MgCl_(2)+NH_(4)OH`

D

`Zn+2AgCN rarr 2Ag + Zn(CN)_(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Zn overset("Oxi.")(rarr)Zn^(2+)+2e^(-)Ag^(+)+e^(-)overset("Red")(rarr)Ag`
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DINESH PUBLICATION-REDOX REACTIONS-Revision Question
  1. The oxidation state of sulphur in Na(2)S(4)O(6) is

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  2. The values of X, Y and Zs in the reaction are repectively: XMnO(4)^(...

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  3. Which of the following is a redox reaction ?

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  4. When KMnO(4) acts as an oxidising agent and ultimately from MnO(4)^(2-...

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  5. The oxidation number of Fe in K(4)[Fe(CN)(6)] is

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  6. The oxidation number of S in H(2)S(2)O(8) is

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  7. The oxidation states of sulphur in the anions SO(3)^(2-), S(2)O(4)^(2-...

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  8. MnO(4)^(2-) (1 mole) in neutral aqueous medium is disproportionate to

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  9. P(4)+NaOH+H(2)O rarr NaH(2)PO(3)+PH(3) is

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  10. Which of the following act both as an oxidising as well as reducing ag...

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  11. How many mole of electrons are involved in the reduction of one mole o...

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  12. What is the oxidation number of chlorine in ClO(3)^(-) ?

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  13. In acidic medium, dichromate ion oxidizes ferrous ion to ferric ion. I...

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  14. In the reaction, KMnO(4) + 16 HCl rarr 5C1(2) + 2MnCl(2) + 2KCl + 8H...

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  15. Nitrogen shows different oxidation states in the range

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  16. What is the equivalent mass of IO4^(-) when it is converted into I2 i...

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  17. Which is the best description of the behaviour of bromine in the react...

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  18. Oxidation state of oxygen in H(2)O(2) is

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  19. In the iodometric estimation in the laboratory which process is involv...

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  20. KI and CuSO4 solution when mixed give .

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