Electrochemistry MCQ Set 2

Explore this diverse selection of multiple-choice questions (MCQs) designed for various examinations. Electrochemistry MCQ Set 2 focuses on essential aspects of the subject, ensuring comprehensive preparation across different categories and fields of study to enhance your knowledge and readiness. The right answers for each question is provided next to respective questions for your convenience, you can either attend the test or dirtectly access the right answers by clicking the show correct answer button

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1. What is the standard electrode potential for the reduction of Cu^2+ to Cu?

A. +0.34 V

B. +0.52 V

C. +0.76 V

D. -0.76 V

2. What is the charge on the ion of an element that has gained 3 electrons?

A. +3

B. -3

C. +2

D. -2

3. In electrochemistry, what does the term 'galvanic cell' refer to?

A. A cell where chemical energy is converted to electrical energy

B. A cell where electrical energy is converted to chemical energy

C. A non-rechargeable battery

D. An electrolyte solution

4. What is the main function of an electrolyte in an electrochemical cell?

A. To conduct electricity

B. To provide energy

C. To act as a catalyst

D. To separate the electrodes

5. Which metal is used as the anode in a common dry cell?

A. Zinc

B. Copper

C. Iron

D. Lead

6. What is the electrode potential of a standard hydrogen electrode?

A. 1.0 V

B. 0.0 V

C. -1.0 V

D. 0.5 V

7. What is the function of a salt bridge in a galvanic cell?

A. To maintain electrical neutrality

B. To increase the cell potential

C. To provide a surface for the reaction

D. To act as an inert electrode

8. In a redox reaction, what happens at the cathode?

A. Oxidation

B. Reduction

C. Neutralization

D. Precipitation

9. What is the main advantage of a fuel cell over a traditional battery?

A. Higher efficiency

B. Lower cost

C. Easier maintenance

D. Portability

10. In electrolysis, which substance is reduced at the cathode?

A. Anion

B. Cation

C. Molecule

D. Proton

11. Which of the following processes is used to refine metals?

A. Electrolysis

B. Distillation

C. Filtration

D. Crystallization

12. Which gas is produced at the anode during the electrolysis of molten sodium chloride?

A. Hydrogen

B. Chlorine

C. Oxygen

D. Nitrogen

13. What is the purpose of using a platinum electrode in a standard hydrogen electrode?

A. It acts as an inert conductor

B. It reacts with hydrogen

C. It increases the cell potential

D. It acts as a catalyst

14. What is a half-cell in electrochemistry?

A. A compartment where either oxidation or reduction occurs

B. A device that measures cell potential

C. A type of electrolyte solution

D. A battery with half the capacity

15. What does the term 'cell potential' refer to in electrochemistry?

A. The voltage produced by an electrochemical cell

B. The current produced by an electrochemical cell

C. The resistance of an electrochemical cell

D. The power of an electrochemical cell

16. In a galvanic cell, what is the sign of the anode?

A. Positive

B. Negative

C. Neutral

D. Variable

17. Which of the following is a primary cell?

A. Lead-acid battery

B. Nickel-cadmium battery

C. Lithium-ion battery

D. Alkaline battery

18. Which law states that the amount of substance produced at each electrode is directly proportional to the quantity of electricity passed through the electrolyte?

A. Faraday's First Law of Electrolysis

B. Faraday's Second Law of Electrolysis

C. Coulomb's Law

D. Ohm's Law

19. What is the main component of the electrolyte in a lead-acid battery?

A. Sulfuric acid

B. Hydrochloric acid

C. Sodium chloride

D. Potassium hydroxide

20. What happens to the cell potential when the temperature increases?

A. It increases

B. It decreases

C. It remains the same

D. It becomes zero

21. Which of the following metals is most likely to corrode?

A. Iron

B. Copper

C. Gold

D. Platinum

22. What is the main use of a potentiometer in electrochemistry?

A. To measure the electromotive force (emf) of a cell

B. To measure the current

C. To measure the resistance

D. To measure the capacitance

23. In a zinc-copper galvanic cell, which metal acts as the anode?

A. Zinc

B. Copper

C. Both

D. Neither

24. What is the product formed at the cathode during the electrolysis of aqueous sodium chloride solution?

A. Hydrogen gas

B. Chlorine gas

C. Sodium metal

D. Oxygen gas

25. Which of the following statements is true about a rechargeable battery?

A. It can be recharged and used multiple times

B. It can only be used once

C. It is always disposable

D. It has a lower capacity than non-rechargeable batteries

26. In electroplating, which electrode is the object to be plated attached to?

A. Anode

B. Cathode

C. Both

D. Neither

27. What does the term 'overvoltage' refer to in electrochemistry?

A. The extra voltage required to drive a non-spontaneous reaction

B. The standard electrode potential

C. The equilibrium potential

D. The theoretical cell potential

28. In a Daniel cell, which of the following is used as the electrolyte for the copper electrode?

A. Copper sulfate solution

B. Zinc sulfate solution

C. Sodium chloride solution

D. Potassium nitrate solution

29. Which of the following is an example of an inert electrode?

A. Platinum

B. Copper

C. Zinc

D. Iron

30. During the electrolysis of water, at which electrode is hydrogen gas produced?

A. Anode

B. Cathode

C. Both

D. Neither

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