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The oxide which can be reduced by hydrog...

The oxide which can be reduced by hydrogen is :

A

`Na_(2)O`

B

`CaO`

C

`K_(2)O`

D

`CuO`

Text Solution

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The correct Answer is:
D
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OP TANDON-ELECTROCHEMISTRY-OBJECTIVE TYPE QUESTION (LEVEL -A)
  1. Which of the following methods does not liberate hydrogen ?

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  2. A depolarizer used in dry cell is :

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  3. The oxide which can be reduced by hydrogen is :

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  4. The reference calomel electrode is made from which of the following ?

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  5. Given, standard electrode potentials, {:(Fe^(3+)+3e^(-) rarr Fe,,,E^...

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  6. K,Ca and Li metals may be arranged in the decreasing order of their st...

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  7. Which of the following is incorrect in a galvanic cell ?

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  8. In an electrochemical cell, anode and cathode are:

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  9. Is the reaction, 2Al+3Fe^(2+) hArr 2Al^(3+) + 2Fe possible ?

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  10. In an experiment setup for the measurement of EMF of a half cell using...

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  11. A secondary cell is one :

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  12. The reduction potential of a hydrogen electrode at pH 10 at 298K is : ...

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  13. The standard emf of the cell, Ni|Ni^(2+)(1.0M)||Ag^(+)(1.0M)|Ag [E^(@)...

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  14. Consider Delta G^(@) for the following cell reaction : Zn (s) + Ag(2...

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  15. The position of some metals in the electrochemical series in dectreasi...

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  16. A half cell reaction is one that

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  17. Which Nernst equation is true to find out the potential of non-standar...

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  18. During the electrolysis of fused NaCl, which reaction occurs at anode ...

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  19. E^(@) (Ni^(2+)//NI) = -0.25 "volt", E^(@) (Au^(3+)//Au) = 1.50 "volt"...

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  20. The strong oxidising agent has :

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