This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 3 Electrochemistry – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. As temperature increases electrolytic conduction A) Increases. B) Decreases. C) Not affected. D) Remais same. Show Answer Correct Answer: A) Increases. 2. ANOTHER NAME FOR A SPONTANEOUS ELECTROCHEMICAL CELL A) SALT BRIDGE. B) VOLTMETER. C) ELECTROLYSIS CELL. D) VOLTAIC CELL. Show Answer Correct Answer: D) VOLTAIC CELL. 3. The conductance in electrolyte conductors is due to A) Either movement of electrons or ions. B) Flow of free mobile electrons. C) Movement of ions. D) None of the above. Show Answer Correct Answer: C) Movement of ions. 4. State the Nernst equation. A) Ecell = E$^\circ$cell-(RT/nF) * ln(Q). B) Ecell = E$^\circ$cell + (RT/nF) * ln(Q). C) Ecell = E$^\circ$cell-(RT/nF) * log(Q). D) Ecell = E$^\circ$cell-(RT/nF) * ln(K). Show Answer Correct Answer: A) Ecell = E$^\circ$cell-(RT/nF) * ln(Q). 5. How does the choice of electrode material affect the performance of a galvanic cell? A) It has no impact on the performance of the cell. B) It only affects the color of the cell. C) It affects the rate of electron transfer and the overall efficiency of the cell. D) It increases the weight of the cell. Show Answer Correct Answer: C) It affects the rate of electron transfer and the overall efficiency of the cell. 6. The cell potential in Mercury cell is A) 1.5V. B) 1.35V. C) 1.53V. D) 1.6V. Show Answer Correct Answer: B) 1.35V. 7. During electrolysis of molten NaCl, the time required to produce 0.10 mol of chloride gas using a current of 3 ampere is A) 55 minutes. B) 110 minutes. C) 220 minutes. D) 330 minutes. Show Answer Correct Answer: B) 110 minutes. 8. All electrochemical processes involve redox reactions. A) True. B) Flase. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Calculate the mass of Ag deposited at cathode when a current of 2 amperes was passed through a solution of AgNO$_{3}$ for 15 minutes.[Given:Molar mass of Ag = 108 g mol$^{-1}$ 1F = 96, 500 C mol$^{-1}$) A) 3.1 g. B) 4.2 g. C) 3.015 g. D) 2.015 g. Show Answer Correct Answer: D) 2.015 g. 10. The electrolysis of aqueous sodium nitrate using carbon electrode was carried out in a lab. Which of the following is true about this experiment? A) The sodium ions are discharged at the cathode. B) The nitrate ions are discharged at the anode. C) Hydrogen gas is produced in the anode. D) Oxygen gas is produced in the anode. Show Answer Correct Answer: D) Oxygen gas is produced in the anode. 11. In the context of cell potential calculation, the Nernst equation is used to: A) Determine the cell potential at standard conditions. B) Calculate the maximum work from a galvanic cell. C) Adjust the cell potential for non-standard conditions. D) Measure the concentration of electrolytes directly. Show Answer Correct Answer: C) Adjust the cell potential for non-standard conditions. 12. In electrolytic conductors, electrical conductivity is due to the movement of ..... A) Ions. B) Electrons. C) Metals. D) Protons. Show Answer Correct Answer: A) Ions. 13. A half reaction is one that A) Takes place at one electrode. B) Consumes half a unit of electricity. C) Involves half a mole of electrolyte. D) Goes halfway to completion. Show Answer Correct Answer: A) Takes place at one electrode. 14. Chlorine can not displace A) F from NaF. B) I from NaI. C) Br from NaBr. D) F and I from salt solution. Show Answer Correct Answer: A) F from NaF. 15. The standard reduction potentials of Cu$^{2+}$/Cu and Cu$^{2+}$/Cu$^{+}$ are 0.337 and 0.153 respectively. The standard electrode potential of Cu$^{+}$/Cu half cell is A) 0.184 V. B) 0.521 V. C) 0.693 V. D) 1.23 V. Show Answer Correct Answer: B) 0.521 V. 16. The standard electrode potential of Pb$^{2+}$/ Pb and Cu$^{2+}$/ Cu is-0.13V and +0.34 V respectively. What is anode and cathode for the galvanic cell? A) Anode:Pb$^{2+}$, Cathode:Cu. B) Anode:Pb, Cathode:Cu. C) Anode:Pb, Cathode:Cu$^{2+}$. D) Anode:Pb, Cathode:Cu$^{2+}$. Show Answer Correct Answer: B) Anode:Pb, Cathode:Cu. 17. Which of the following is not the example of electrochemical industries in our daily life? A) Voltaic cells are used in different devices such as radio, hand phones, and others. B) Electroplating of iron can prevent it from corrosion. C) Chemical substance such as chlorine is used to produce toxic solution. D) Extraction of useful metals such as aluminium using electrolysis. Show Answer Correct Answer: C) Chemical substance such as chlorine is used to produce toxic solution. 18. The flow of electrons in a particular direction is called ..... A) Electrolysis. B) An electrical current. C) Oxidation. D) Reduction. Show Answer Correct Answer: B) An electrical current. 19. How much charge is required to reduce 1 mol of Cu$^{+2}$ into Cu? A) 1 c. B) 2 c. C) 1F. D) 2F. Show Answer Correct Answer: D) 2F. 20. In a galvanic cell, where does oxidation occur? A) At the anode. B) At the cathode. C) In the salt bridge. D) In the electrolyte solution. Show Answer Correct Answer: A) At the anode. 21. In the space station, why can you not rely on solar cells all the time? A) They have to be shut down for maintenance. B) They are unreliable and frequently overheat. C) They only produce electricity when the Sun is visible. D) None of the above. Show Answer Correct Answer: C) They only produce electricity when the Sun is visible. 22. Which cell is not spontaneous? A) Voltaic. B) Electrolytic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Electrolytic. 23. In an electrochemical cell A) Potential energy changes toKinetic energy. B) Potential energy changes into electrical energy. C) Electrical energy changes to kinetic energy. D) Chemical energy changes into electrical energy. Show Answer Correct Answer: D) Chemical energy changes into electrical energy. 24. Terminal negatif sel kimia A) Anion. B) Kation. C) Anod. D) Katod. Show Answer Correct Answer: C) Anod. 25. The device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as: A) Mercury cell. B) Electrolytic cell. C) Fuel cell. D) Dry cell. Show Answer Correct Answer: C) Fuel cell. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 1Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 2Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 3Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 4Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 5Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 6Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 7Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 8Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 9Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books