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When the sample of copper with the zinc ...

When the sample of copper with the zinc impurity is to be purified by electrolysis, the appropriate electrodes are

A

`{:("Cathode",,"Anode"),("Pure zinc",,"Pure copper"):}`

B

`{:("Cathode",,"Anode"),("Impure sample",,"Pure copper"):}`

C

`{:("Cathode",,"Anode"),("Impure zinc",,"Impure sample"):}`

D

`{:("Cathode",,"Anode"),("Pure copper",,"Impure sample"):}`

Text Solution

Verified by Experts

The correct Answer is:
D
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OP TANDON-ELECTROCHEMISTRY-OBJECTIVE TYPE QUESTION (LEVEL -A)
  1. A current is passed through 2 voltmeters connected in series. The firs...

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  2. Which reaction is possible at anode?

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  3. When the sample of copper with the zinc impurity is to be purified by ...

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  4. Conductivity (Unit Siemen's 'S') is directly proportional to area of t...

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  5. Zn+Cu^(2+)(aq)hArrCu+Zn^(2+)(aq). Reaction quotient is Q=([Zn^(2+)])...

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  6. In which of the following cells with the emf be independent of the act...

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  7. Standard electrode potential data are useful for understanding the sui...

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  8. The standard reduction potential E^(@), for the half reaction are : ...

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  9. In a galvanic cell, the electrons flow from :

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  10. The standard emf of a galvanic cell involving cell reaction with n = 2...

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  11. The emf of the cell, Zn|Zn^(2+) (0.01 M)||Fe^(2+) (0.001 M)|Fe at 29...

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  12. Consider the following E^o values : E^o Fe^(3+)//FE^(2+)o = + 0.77 ...

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  13. The highest electrical conductivity of the following aqueous solutions...

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  14. Aluminium oxide may be electrolysed at 1000^(@)C to furnish aluminium ...

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  15. During the process of electroytic refining of copper some metals prese...

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  16. How many coulombs of electricity are required for the reduction of 1 m...

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  17. The standard electrode potential a Ag^(+)//Ag is +0.80 V and of Cu^(2+...

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  18. The half-cell reaction for the corrosion, {:(2H^(+)+,(1)/(2)O(2)+2e^(-...

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  19. What is the cell reaction occurring in Daneill cell (galvanic cell) ?

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  20. What are the units of equivalent conductivity of a solution ?

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