In the electrochemical cell H2(g),1 atm H+(1M)||Cu2+(1M)|Cu(s).Which one of the following statements is true

1.  H2 is anode,Cu is Cathode

2.  Reduction occurs at H2 electrode

3.  Oxidation occurs at Cu electrode

4.  H2 is cathode,Cu is anode

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4
Correct Answer :

H2 is anode,Cu is Cathode


Explanation :
No Explanation available for this question

The following are some statements about Voltaic cell i) Chemical energy converted into electrical energy

1.  All are correct

2.  Only i,iii and iv are correct

3.  Only i,ii and iii are correct

4.  Only i and iii are correct

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4
Correct Answer :

All are correct


Explanation :
No Explanation available for this question

Lithium is generally used as an electrode in high energy density batteries. This is because

1.  Lithium does not corrode easily

2.  Lithium is quite reactive

3.  Lithium has quite high negative reduction potential

4.  Lithium is the lightest element

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4
Correct Answer :

Lithium has quite high negative reduction potential


Explanation :
No Explanation available for this question

The amount of electricity that can deposit 108gm of silver from AgNO3 solution is

1.  1 esu

2.  1 coulomb

3.  1 ampere

4.  1 Faraday

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4
Correct Answer :

1 Faraday


Explanation :
No Explanation available for this question

Equivalent conductance at infinite dilution,λ0 of NH4Cl,NaOH and NaCl are 128.0,217.8 and 109.9 ohm-1cm2eq-1 respectively. The equivalent conductance of 0.01N NH4

1.  0.62

2.  0.4

3.  0.1

4.  0.04

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4
Correct Answer :

0.04


Explanation :
No Explanation available for this question

Number of coulombs of current required to convert completely 1 mole of MnO4-ions in acid medium to one mole of Mn2+ions electrolytically is

1.  96500x6

2.  96500x2

3.  5x96500

4.  96500

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4
Correct Answer :

5x96500


Explanation :
No Explanation available for this question

One ampere of current is passed for 9650 seconds through molten AlCl3.What is the weight in grams of Al deposited at cathode(Atomic weight of Al=27).

1.  90.0

2.  0.09

3.  9.0

4.  0.9

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4
Correct Answer :

0.9


Explanation :
No Explanation available for this question

Number of electrons required to deposit one mole of Mg2+ ions is

1.  3.012x1023

2.  1.8069x1024

3.  1.2046x1024

4.  6.023x1023

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4
Correct Answer :

1.2046x1024


Explanation :
No Explanation available for this question

The ratio of mass of hydrogen and magnesium deposited by the same amount of electricity from H2SO4 and fused MgSO4 is

1.  1:32

2.  1:16

3.  1:12

4.  1:8

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4
Correct Answer :

1:12


Explanation :
No Explanation available for this question

One gram atomic weight of metal of the following can be deposited by one Faraday

1.  CuSO4

2.  NaCl

3.  BaCl2

4.  AuCl3

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4
Correct Answer :

NaCl


Explanation :
No Explanation available for this question
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