ELECTROCHEMISTRY
EAMCET MCQ’S
1. The difference between
the electrode potentials of two electrodes when no
current
is drawn through the cell is called ___________.
(i)
Cell potential
(ii)
Cell emf
(iii)
Potential difference
(iv)
Cell voltage
2. Which of the following
statement is not correct about an inert electrode in a
cell?
(i)
It does not participate in the cell reaction.
(ii)
It provides surface either for oxidation or for reduction reaction.
(iii)
It provides surface for conduction of electrons.
(iv)
It provides surface for redox reaction.
3. Which of the statements
about solutions of electrolytes is not correct?
(i)
Conductivity of solution depends upon size of ions.
(ii)
Conductivity depends upon viscosiy of solution.
(iii)
Conductivity does not depend upon solvation of ions present in solution.
(iv)
Conductivity of solution increases with temperature.
4. The cell constant of a conductivity cell _____________.
(i)
changes with change of electrolyte.
(ii)
changes with change of concentration of electrolyte.
(iii)
changes with temperature of electrolyte.
(iv)
remains constant for a cell.
5. While charging the lead
storage battery ______________.
(i)
PbSO4 anode is reduced to Pb.
(ii)
PbSO4 cathode is reduced to Pb
(iii)
PbSO4 cathode is oxidised to Pb.
(iv)
PbSO4 anode is oxidised to PbO2.
6. Use the data given in
Q.8 and find out the most stable ion in its reduced form.
(i)
Cl–
(ii)
Cr3+
(iii)
Cr
(iv)
Mn2+
7. Use the data given in Q.8 and find out which of the following is
the strongest
oxidising
agent.
(i)
Cl–
(ii)
Mn2+
(iii)
MnO4–
(iv) Cr3+
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