1. Which of the following correctly describes a “rechargeable battery”?
    • A) It can be used once and then discarded
    • B) It can be recharged multiple times
    • C) It cannot be recharged
    • D) It is used in non-electrochemical applications
    • Answer: B) It can be recharged multiple times
  2. In a concentration cell, the electrode with the lower concentration is:
    • A) The anode
    • B) The cathode
    • C) The salt bridge
    • D) The reference electrode
    • Answer: A) The anode
  3. Which of the following is an example of an electrolytic process?
    • A) Electroplating
    • B) Galvanization
    • C) Electrorefining
    • D) All of the above
    • Answer: D) All of the above
  4. What is the main difference between primary and secondary cells?
    • A) Primary cells are rechargeable, secondary cells are not
    • B) Secondary cells are rechargeable, primary cells are not
    • C) Primary cells use different materials than secondary cells
    • D) There is no difference between primary and secondary cells
    • Answer: B) Secondary cells are rechargeable, primary cells are not
  5. What is the term used to describe the energy required to drive a non-spontaneous electrochemical reaction?
    • A) Activation energy
    • B) Overpotential
    • C) Gibbs free energy
    • D) Reaction enthalpy
    • Answer: B) Overpotential
  6. The concentration cell can be used to measure:
    • A) Electrode potentials
    • B) Standard reduction potentials
    • C) The difference in concentration of ions
    • D) The heat of reaction
    • Answer: C) The difference in concentration of ions
  7. Which of the following substances can be used as an electrolyte in an electrochemical cell?
    • A) Sodium chloride solution
    • B) Pure water
    • C) Non-metallic solids
    • D) Organic solvents
    • Answer: A) Sodium chloride solution
  8. In an electrolytic cell, which factor does not affect the efficiency of electrolysis?
    • A) Concentration of electrolyte
    • B) Temperature of the electrolyte
    • C) Type of electrode material
    • D) The color of the electrolyte
    • Answer: D) The color of the electrolyte
  9. What happens to the cell potential as the temperature of the electrochemical cell increases?
    • A) It decreases
    • B) It increases
    • C) It remains constant
    • D) It becomes zero
    • Answer: B) It increases
  10. The cell potential of an electrochemical cell is influenced by:
    • A) The nature of the reactants and products
    • B) The concentration of reactants and products
    • C) The temperature of the cell
    • D) All of the above
    • Answer: D) All of the above
Pages: 1 2 3 4 5 6 7 8 9 10 11