WorksheetsUnit 5
Total questions: 15
Worksheet time: 8mins
An electrochemical cell can only convert electrical energy to chemical energy.
True
False
An electrochemical cell generally consists of a cathode and an anode. Which of the following statements is correct with respect to the cathode?
Oxidation occurs at the cathode
Electrons move into the cathode
Usually denoted by a negative sign
Is usually made up of insulating material
Which of the following is not a generally used electrolyte in the salt bridges used to connect the two half-cells of an electrochemical cell?
NaCl
KNO3
KCl
ZnSO4
Which of the following statements is correct regarding Electrochemical cells?
Cell potential is an extensive property
Cell potential is an intensive property
The Gibbs free energy of an electrochemical cell is an intensive property
Gibbs free energy is undefined for an electrochemical cell
Which of the following factors does not affect the electrode potential of an electrode?
Nature of the electrode (metal)
Temperature of the solution
Molarity of the solution
Size of the electrode
Which of the following is not a characteristic feature of a salt bridge?
Salt bridge joins the two halves of an electrochemical cell
It completes the inner circuit
It is filled with a salt solution (or gel)
It does not maintain electrical neutrality of the electrolytic solutions of the half-cells
Which of the following is not a type of electrochemical cell?
Voltaic cell
Photovoltaic cell
Electrolytic cell
Fuel Cell
What is the direction of flow of electrons in an electrolytic cell?
Anode to cathode externally
Anode to cathode internally
Cathode to anode externally
Cathode to anode in the solution
An electrochemical cell generally consists of a cathode and an anode. Which of the following statements is correct with respect to the cathode?
Oxidation occurs at the cathode
Electrons move into the cathode
Usually denoted by a negative sign
Is usually made up of insulating material
Which of the following is the example of the electrolytes?
Acids
Metals
Alloys
Oxides
The process of decomposition of an electrolyte by passing electric current through its solution is called as __________
Electrolyte
Electrode
Electrolysis
Electrochemical cell
To detect the flow of current a head telephone ear piece is used instead of __________
Ammeter
Galvanometer
Voltameter
Multimeter
The electrolyte is placed in a special type of cell known as ____________
Conductivity cell
Conductance cell
Equivalent cell
Conduction cell
What is the observation when the opposing external applied potential to an electrochemical cell is greater than the cell’s potential?
The electrochemical cell behaves like an electrolytic cell
The electrochemical cell stops functioning
Only oxidation reactions occur in the cell
Only reduction reactions occur in the cell
Which of the following conditions are satisfied when the cell reaction in the electrochemical cell is spontaneous?
ΔG° > 0
E°cell < 0
E°cell = 0
ΔG° < 0
