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Which of the following is a redox reacti...

Which of the following is a redox reaction? 

A

`NaCI+KNO_(3) rarr NaNO_(3)+KCI`

B

`CaC_(2)O_(4)+ 2HCl rarr CaCl_(2) +H_(2)C_(2)O_4`

C

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

D

`Zn+2AgCN rarr 2Ag + Zn(CN)_2`

Text Solution

Verified by Experts

The correct Answer is:
D
`overset(0)(Zn)+2overset(+1)(Ag)CNrarr2overset(0)(Ag)+overset(+2)(Zn)(CN_2)`
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AAKASH SERIES-REDOX REACTIONS-ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN)) (Straight Objective Type Questions)
  1. Which of the following is redox reaction

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  2. Which of the following is metal displacement reaction

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  3. Which of the following is a redox reaction?

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  4. Which of the following is not an example of disproportionation reactio...

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  5. In the reaction 3Mg+N(2)rarrMg(3)N(2)

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  6. Which one of the halogn is prepared by only electrolysis method

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

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  8. In Cu - Zn cell

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  9. In a electrochemical cell

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  10. The electrode potential of an electrode is

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  11. Daniel cell is shown as

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  12. Which of the following metals will not react with solution of CuSO4 ?

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  13. Equal quantities of zinc are separately treated with caustic soda solu...

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  14. The oxidation number of ..V.. in Rb(4) Na[HV(10)O(28)] is

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  15. A solution of 0.1M KMnO4 is used for the reaction S(2)O(3)^(-2) + 2 M...

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  16. 0.5 g mixture of oxalic acid (H(2)C(2)O4) and some sodium oxalate (Na...

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  17. A solution contains mixture of H(2)SO(4), H(2)C(2)O4 20 ml of this so...

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  18. 100 ml of 0.1M aqueous ferric alum solution is completely reduced with...

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  19. What volume of 0.2 M Ba( MnO(4))2 solution is required for complete o...

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  20. A 1.0g sample of pyrolusite ore containing MnO2 (MW = 87) was dissolv...

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