Electrochemistry MCQs


11. Oxidation involves:
A. Gain of electrons
B. Loss of electrons
C. Gain of protons
D. Loss of neutrons
Answer: B


12. Reduction involves:
A. Loss of electrons
B. Gain of electrons
C. Loss of ions
D. Gain of neutrons
Answer: B


13. A salt bridge is used to:
A. Increase voltage
B. Maintain electrical neutrality
C. Conduct heat
D. Store energy
Answer: B


14. Which is an example of electrolyte?
A. Sugar solution
B. NaCl solution
C. Oil
D. Benzene
Answer: B


15. Which is a non-electrolyte?
A. HCl
B. NaOH
C. Sugar
D. KCl
Answer: C


16. Strong electrolytes:
A. Partially ionize
B. Completely ionize
C. Do not ionize
D. Absorb heat
Answer: B


17. Weak electrolytes:
A. Completely ionize
B. Partially ionize
C. Do not dissolve
D. Do not react
Answer: B


18. The Daniell cell consists of:
A. Zn and Cu
B. Fe and Al
C. Na and K
D. Mg and Ca
Answer: A


19. EMF stands for:
A. Electro Magnetic Force
B. Electromotive Force
C. Electric Mass Flow
D. Electron Motion Force
Answer: B


20. EMF is measured using:
A. Voltmeter
B. Ammeter
C. Thermometer
D. Barometer
Answer: A

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