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(A) : Lithium has less electrode potenti...

(A) : Lithium has less electrode potential than caesium
(R) : Hydration energy of lithium ion is high.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

(A) is false but (R) is true

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
  1. The following are some statements about normal hydrogen electrode ...

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  2. Which defines the standard reduction electrode potential of Zn^(2+) io...

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  3. (A) : Lithium has less electrode potential than caesium (R) : Hydr...

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  4. The reference electrode is made by using

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  5. The more electro positive element has

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  6. The correct match is

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  7. A smuggler could not carry gold by depositing iron on the gold surface...

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  8. Standard reduction electrode potential of three metals A, B and C are ...

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  9. The difference of potential of two electrodes in a galvanic cell is kn...

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  10. Zn gives H2 gas with H2SO4 and HCl but not with HNO3 because

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  11. When Zn piece is kept in CuSO4 solution, copper gets precipitated beca...

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  12. For I2 + 2e to 2I^(-) , standard reduction potential = + 0.54 volt. Fo...

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  13. Beryllium is placed above magnesium in the Il group. When beryllium du...

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  14. E^(@) for Fe^(2+) + 2e to Fe is -0.44 V , E^(@) for Zn^(2+) + 2e to ...

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  15. Based on the data given below , the correct order of reducing power i...

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  16. For the cell prepared from electrod A , Cr2O7^(2-) |Cr^(3+) , E("red"...

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  17. The S.R.Ps of Cu^(2+) // Cu , Hg^(2+)//Hg and Zn^(2+)//Zn are respecti...

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  18. The E(M^(3+)|M^(2+))^(0) values for Cr, Mn, Fe and Co are -0.41, +1.57...

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  19. (A): A blue colour is obtained when a copper wire is immersed in AgNO3...

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  20. The half cell reaction, with its standard reduction potentials are ...

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