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The metal which cannot liberate H2 from ...

The metal which cannot liberate `H_2` from hydrochloric acid is :

A

Zn

B

Cu

C

Mg

D

AI

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The correct Answer is:
B
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  3. The metal which cannot liberate H2 from hydrochloric acid is :

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  4. KCl (aq) cannot be used as a salt bridge for the cell Cu(s)|CuSO4(aq)|...

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  5. The calomel electrode is reversible with respect to:

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  6. Standard reduction potential of an element is equal to:

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  7. Beryllium is placed above magnesium in the II group. Beryllium dust, t...

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  8. For the cell Zn|Zn^(2+)||Cu^(2+)|Cu if the concentration of Zn^(2+) an...

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  9. Copper can be deposited from acidified copper sulphate and alkaline cu...

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  10. A cell necessarily does not contain:

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  11. Lithium is generally used as an electrode in high energy density batte...

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  12. Cu (II) sulphate solution is treated separately with KCl and KI In whi...

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  13. Which process occurs in the electrolysis of aqueous solution of nickel...

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  14. In aqueous solution, weak electrolytes dissociates:

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  15. Which reaction does not takes place at cathode ?

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  16. The electroplating with chromium is undertaken because :

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  17. For a given cell reaction , Cr +3H2O +OCI^- rarrCr^(3+)+3CI^- 6OH^-, ...

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  18. Molten NaOH conducts electricity , becauseNaOH is :

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  19. The standard reduction potentials of the metals A,B and C are 0.68, -2...

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  20. If the half cell reaction A +e rarr A^- has a large negative reduction...

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