Chemistry Electrochemical Cells Online Exam Quiz
Chemistry Electrochemical Cells GK Quiz. Question and Answers related to Chemistry Electrochemical Cells. MCQ (Multiple Choice Questions with answers about Chemistry Electrochemical Cells
When equilibrium is reached inside the two half-cells of the electrochemical cells, what is the net voltage across the electrodes?
Options
A : > 1
B : < 1
C : = 0
D : Not defined
What is the direction of flow of electrons in an electrolytic cell?
Options
A : Anode to cathode externally
B : Anode to cathode internally
C : Cathode to anode externally
D : Cathode to anode in the solution
Which of the following statements is correct regarding Electrochemical cells?
Options
A : Cell potential is an extensive property
B : Cell potential is an intensive property
C : The Gibbs free energy of an electrochemical cell is an intensive property
D : Gibbs free energy is undefined for an electrochemical cell
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?
Options
A : NaCl
B : KNO3
C : KCl
D : ZnSO4
Which of the following factors does not affect the electrode potential of an electrode?
Options
A : Nature of the electrode (metal)
B : Temperature of the solution
C : Molarity of the solution
D : Size of the electrode
Which of the following is a not a secondary cell?
Options
A : Nickel-cadmium cell
B : Lead storage cell
C : Mercury cell
D : Leclanche cell
An electrochemical cell generally consists of a cathode and an anode. Which of the following statements is correct with respect to the cathode?
Options
A : Oxidation occurs at the cathode
B : Electrons move into the cathode
C : Usually denoted by a negative sign
D : Is usually made up of insulating material
Which of the following statements regarding primary cells is false?
Options
A : Primary cells cannot be recharged
B : They have low internal resistance
C : They have an irreversible chemical reaction
D : Their initial cost is cheap
Which of the following is not a characteristic feature of a salt bridge?
Options
A : Salt bridge joins the two halves of an electrochemical cell
B : It completes the inner circuit
C : It is filled with a salt solution (or gel)
D : It does not maintain electrical neutrality of the electrolytic solutions of the half-cells
What is the observation when the opposing external applied potential to an electrochemical cell is greater than the cell’s potential?
Options
A : The electrochemical cell behaves like an electrolytic cell
B : The electrochemical cell stops functioning
C : Only oxidation reactions occur in the cell
D : Only reduction reactions occur in the cell
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