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.Management Sciences
Category: Electrochemistry
Which of the following is true in the case of Zn-Cu cell ?
A. The flow of electrons takes place from copper to zinc
B. E0red of copper electrode is less than that of zinc electrode
C. Zinc acts as an anode and copper as cathode
D. All are correct
List of elements based on hydrogen scale is called________________?
A. periodic table
B. groups
C. periods
D. electrochemical series
Voltaic cell is a_________________?
A. irreversible cell
B. reversible cell
C. alkaline cell
D. all of the above
Molten NaCl conducts electricity due to the presence of_______________?
A. Free electrons
B. Free molecules
C. Free ions
D. Atoms of Na and Cl
Electrode potential of Zn is__________________?
A. oxidation
B. reduction
C. oxidation-reduction
D. depends on the nature of the coupled electrode
Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________?
A. Daniel cell
B. Downs cell
C. Voltaic cell
D. Nelsons cell
Which of the following cell is not rechargeable ?
A. Lead storage battery
B. Silver oxide cell
C. Fuel cell
D. Ni-Cd cell
Apparent charge on atom in molecule is___________________?
A. valency
B. coordination number
C. oxidation number
D. charge number
In an electrolytic cell current flows ?
A. From cathode to anode in outer circuit
B. From anode to cathode outside the cell
C. From cathode to anode inside the cell
D. both B & C
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