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When same quantity of electricity is pas...

When same quantity of electricity is passed for half an hour, the amount of Cu and Cr deposited are respectively 0.375g and 0.30g. Ratio of electrochmical equivalent of Cu and Cr is

A

0.8

B

1.25

C

2.5

D

1.62

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MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. One Faraday of electricity is passed through molten Al2O3, aqueous sol...

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  2. Consider the following four electrodes, P=Cu^(2+)(0.001M)|Cu(s) Q=cu^...

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  3. When same quantity of electricity is passed for half an hour, the amou...

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  4. The electrode potentials of a hydrogen, electrode at pH=10 is

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  5. E1,E2 and E3 are the emfs of the following three galvanic cells respec...

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  6. The standard redox potentials for the reacitons Mn^(2+)+2barerarrMn an...

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  7. A current is passed through two cells connected in series. The first c...

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  8. A weak electrolyte having the limiting equivalent conductance of 400 S...

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  9. Which of the following cannot be expressed as N m^(-2) ?

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  10. The approximate time duration in hours to electropole 30 g of calcium ...

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  11. 1 M solution each of Cu(NO3)2, AgNO3, Hg(NO3)2 and Mg(NO3)2 is electro...

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  12. For the following data at 25^@C Cr^(3+)(aq)+1barerarrCr^(2+)(aq),E^@=-...

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  13. Equilvalent conductivity at infinite dilution for sodium potassium oxa...

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  14. A conductivity cell has been calcibrated with a 0.01 M 1:1 eletrolyte ...

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  15. A current strength of 9.65 amperes is passed through excess fused AlCl...

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  16. When the total cell emf of the voltaic cell is greater than zero, whic...

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  17. The quantity of electricity needed to separately electrolysis 1 M solu...

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  18. At 25∘C, the molar conductance of 0.007M hydrofluoric acid is 150 mho ...

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  19. The change in potential of the half cell Cu^(2+)|Cu, when aqueous Cu^(...

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  20. The values of limiting ionic conductance of H+ and HCOO-  ions are res...

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