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Three Faraday's of electricity are passe...

Three Faraday's of electricity are passed through molten `Al_2O_3`, aq. solution of `CuSO_4` and molten NaCl taken in three different electrolytic cells. The amounts of Al, Cu and Na deposited at the electrodes will be

A

1 mole : 2 moles: 3 moles

B

1 mole : 1.5 mole: 3 moles

C

3 moles: 2 moles: 1 mole

D

1 mole : 1.5 mole : 2 moles

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The correct Answer is:
B
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AAKASH SERIES-REVISION EXERCISE -ELECTROCHEMISTRY
  1. Same amount of electric current is passed through solutions of AgNO3 ...

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  2. 965 amp current is passed through molten metal chloride for one minute...

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  3. Three Faraday's of electricity are passed through molten Al2O3, aq. s...

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  4. What is the time in sec) required for depositing all the silver presen...

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  5. When 6 xx 10^22 electrons are used in the electrolysis of a metallic ...

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  6. The density of copper is 8 gm/cc. Number of coulombs required to plate...

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  7. During the electrolysis of acidulated water, the mass of hydrogen obta...

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  8. The number of Faradays of electricity required to decompose 100 ml wat...

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  9. If three faradays of electricity are passed through the solutions of A...

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  10. The specific conductance of 0.1N KCl solution at M 23^@C is 0.012 ohm^...

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  11. Resistance of a conductivity cell filled with a solution of an electro...

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  12. lamda^(oo) of NH4OH at infinite dilution is Scm^2 eq^(-1) given lamda^...

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  13. At 25°C the molar conductances at infinite dilution for the strong ele...

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  14. The conductivity of saturated solution of AgCl is found to be 1.86 xx ...

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  15. At 25^@ C, the ionic mobility of CH3COO^(-), H^+ are respectively 4.1 ...

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  16. Equivalent conductance (Lamda) vs concentration graphs are given for s...

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  17. For the redox reaction : Zn(s) + Cu^(2+) (0.1M) to Zn^(2+) (1M) + ...

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  18. E(Cu^(2+)|Cu)^@ = +0.337 V, E(Zn^(2+)| Zn)^@ = - 0.762 V. The EMF of...

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  19. For a cell reaction involving a two-electron change, the standard e.m....

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  20. E(Sn^(2+)|Sn)^@ = -1.14V, E(Pb^(2+)IPb)^@ = 0.126 The cell reaction of...

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