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When [Zn^(2+)] = [Cu^(2+] = 1, the elect...

When `[Zn^(2+)] = [Cu^(2+]` = 1, the electrical potential of Daniell cell is 1.1 V. However,

A

when `E_(ext)` lt 1.1 V, current flows from Zn to Cu

B

when `E_(ext)` = 1.1 V, current flows from Cu to Zn

C

when `E_(ext)` gt 1.1 V, current flows from Zn to Cu

D

when `E_(ext)` lt 1.1 V, electrons flow from Cu to Zn.

Text Solution

Verified by Experts

The correct Answer is:
C
when `E_(ext)` > 1.1 V, current flows from Zn to Cu
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MTG GUIDE-ELECTROCHEMISTRY-NEET Café (Topicwise Practice Questions) (CELLS AND ELECTRODE POTENTIAL)
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  2. Which is the correct order of increasing oxidising ability?

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  3. When [Zn^(2+)] = [Cu^(2+] = 1, the electrical potential of Daniell cel...

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  4. Which of the following will turn blue when placed in the copper vessel...

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  5. Which of the following ionic combinations may lead to the formation of...

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  6. Which statement about standard reduction potentials is correct?

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  7. Which is correct about the reaction between H2O2 and O3 ? (Given: E(H2...

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  8. Red hot carbon will remove oxygen from the oxide 40 and BO but not fro...

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  9. A solution contains Pb^(2+) and Fe^(2+) ions. To it some quantity of F...

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  10. Which of the following statements is true for the electro chemical Dan...

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  11. Which among the following is not correct?

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  12. Standard electrode potentials for Fe electrodes are given as Fe^(2+)...

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  13. Given : E(Fe^(3+)//Fe)^@=-0.036 V E(Fe^(2+)//Fe)^@=-0.439 V. The valu...

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  14. Daniell cell is show as

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  15. In a cell of normal hydrogen electrode and calomel electrode, the elec...

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  16. Two weak acid solutions HA1 and HA2 each with the same concentration a...

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  17. The following facts are available: 2A^+B2to2B^-+A2 2C^(-)+B2to No ...

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  18. A student set up the following apparatus to determine the hydrogen ion...

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  19. Concentration polarization arises because of the

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  20. Which of the following statement is incorrect?

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