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Zn acts as sacrifical or cathodic protec...

`Zn` acts as sacrifical or cathodic protect iont to prevent rusting of iron because

A

`E_(OP)^(@) of Zn lt E_(OP)^(@)` of Fe

B

`E_(OP)^(@) of Zn gt E_(OP)^(@)` of Fe

C

`E_(OP)^(@) of Zn = E_(OP)^(@)` of Fe

D

Zn is cheaper than iron

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(OP)^(@)` of `Zn gt E_(OP)^(@)` of Fe
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DISHA PUBLICATION-ELECTROCHEMISTRY -Exercise
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  2. Which of the following statement is false for fuel cell?

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  3. Zn acts as sacrifical or cathodic protect iont to prevent rusting of i...

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  4. Identify the correct statement

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  5. Serveral blocks of magnesium are fixed to the bottom of a ship to

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  6. During the recharging of lead acid storage cell the reaction at anode ...

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  7. Select the correct cell reaction of the cell Ag(s)|Ag^+(aq)"||"cu^(2+)...

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  8. When an aqueous solution of CuSO(4) is sstirred with a silver spoon th...

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  9. The following facts are availabel : 2A^(c-)+B(2) rarr 2B^(-)+A(2), ...

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  10. If an iron rod is dipped into a solution of CuSO(4) , the blue colour ...

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  11. A gas X at 1 atm is bubbled through a solution containing a mixture of...

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  12. The E^(@) for the following cell is +0.34 V. In(s)|In (OH)3(aq)"||"Sb2...

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  13. From the fllowing half-cell reactions and their standard potentials ,w...

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  14. The nature of curve of E(cell)^(@) vs. log Kc is :

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  15. The equillibrium constant for thefollowing general reaction is 10^(30)...

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  16. The E^(@) at 25^(@)C for the following reaction is 0.55 V. Calculate t...

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  17. Consider the following equation for an electrochemical cell reaction. ...

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  18. The temperature coefficient of a cell whose operation is based on the ...

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  19. A fuel cell develops an electrical potential from the combustion of bu...

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  20. Given the following cell at 25^(@) C . What will be the potential o...

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