Skip to content- What is the process called when a substance gains electrons?
- A) Oxidation
- B) Reduction
- C) Neutralization
- D) Dissociation
- Answer: B) Reduction
- In an electrolytic cell, which electrode is positive?
- A) Anode
- B) Cathode
- C) Both electrodes
- D) None of the electrodes
- Answer: A) Anode
- What is the purpose of a salt bridge in an electrochemical cell?
- A) To conduct electricity
- B) To maintain electrical neutrality
- C) To facilitate electron flow
- D) To separate the electrodes
- Answer: B) To maintain electrical neutrality
- Which of the following metals is commonly used as the anode in a standard electrochemical cell?
- A) Copper
- B) Zinc
- C) Gold
- D) Silver
- Answer: B) Zinc
- Which cell converts electrical energy into chemical energy?
- A) Galvanic cell
- B) Electrolytic cell
- C) Concentration cell
- D) Fuel cell
- Answer: B) Electrolytic cell
- The Nernst equation is used to calculate the:
- A) Cell potential under non-standard conditions
- B) Standard cell potential
- C) Heat of reaction
- D) Reaction rate
- Answer: A) Cell potential under non-standard conditions
- What does the term “electrolyte” refer to?
- A) A substance that does not conduct electricity
- B) A substance that conducts electricity when dissolved in water
- C) A substance that increases electrical resistance
- D) A substance that decreases electrical resistance
- Answer: B) A substance that conducts electricity when dissolved in water
- Which type of cell is used in a flashlight?
- A) Electrolytic cell
- B) Galvanic cell
- C) Concentration cell
- D) Fuel cell
- Answer: B) Galvanic cell
- The positive electrode in an electrochemical cell is called the:
- A) Anode
- B) Cathode
- C) Salt bridge
- D) Electrode
- Answer: A) Anode
- What is the unit of electrical charge?
- A) Joule
- B) Volt
- C) Ampere
- D) Coulomb
- Answer: D) Coulomb
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