This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 3 Electrochemistry – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 18 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Calculate the standard emf of the cell constructed with electrodes having E$^{o}$ values-0.44 V and-0.14V. A) 0.58V. B) 0.4V. C) 0.28V. D) 0.3V. Show Answer Correct Answer: D) 0.3V. 2. A particle with no charge A) Atom. B) Anion. C) Electron. D) Proton. Show Answer Correct Answer: A) Atom. 3. Samuel is working on a science project where he uses chemical energy to drive a chemical reaction in a cell. A) Redox Reactions. B) Electrochemical Cell. C) Electrochemistry. D) Anode. Show Answer Correct Answer: B) Electrochemical Cell. 4. The specific conductance (k) or conductivity of any conducting material is defined as the A) Reciprocal of current. B) Reciprocal of specific resistance. C) Reciprocal of resistance. D) Product of specific resistance and current. Show Answer Correct Answer: B) Reciprocal of specific resistance. 5. Which metal is used as a coating on steel to limit corrosion? A) K. B) Na. C) Zn. D) Ca. Show Answer Correct Answer: C) Zn. 6. Which of these is not likely to act as lewis base? A) BF3. B) PF3. C) CO. D) F-. Show Answer Correct Answer: A) BF3. 7. A voltaic cell consists of ..... half-cells. A) Two. B) Three. C) More than four. D) None of the above. Show Answer Correct Answer: A) Two. 8. What is a substance called that carries an electric charge? A) Electrolyte. B) Solution. C) Salt. D) Molecule. Show Answer Correct Answer: A) Electrolyte. 9. Lead acid storage battery is an example of A) Primary cells. B) Secondary cells. C) Fuel cells. D) Electrolytic cells. Show Answer Correct Answer: B) Secondary cells. 10. During galvanization, Fe metal is covered with A) Zn metal. B) Cu metal. C) Mg metal. D) Sn metal. Show Answer Correct Answer: A) Zn metal. 11. A voltaic cell has a standard potential of +0.31 V. What is the value of $\Delta$G under these conditions? A) -29 kJ. B) +29 kJ. C) -15 kJ. D) More information is required. Show Answer Correct Answer: D) More information is required. 12. Which of the following statements accurately describes the difference between galvanic and electrolytic cells? A) The anode is the negative terminal for a Galvanic cell because the anode is the source of the electrons where oxidation occurs. B) The flow of electrons goes from the anode to the cathode for galvanic cells. C) Oxidation occurs at the negative terminal, and reduction occurs at the positive terminal for an electrolytic cell. D) None of the above. Show Answer Correct Answer: A) The anode is the negative terminal for a Galvanic cell because the anode is the source of the electrons where oxidation occurs. 13. Which of the following ions has the maximum magnetic moment? A) Mn+2. B) Fe+2. C) Ti+2. D) Cr+2. Show Answer Correct Answer: A) Mn+2. 14. What is meant by triple point? A) Degree of freedom is three. B) Three phases are in equilibrium. C) Three components are in equilibrium. D) None. Show Answer Correct Answer: B) Three phases are in equilibrium. 15. Which of the following is a typical characteristic of electrolytes in both galvanic and electrolytic cells? A) They are always solid. B) They must be pure water. C) They contain free ions that conduct electricity. D) They do not participate in the chemical reaction. Show Answer Correct Answer: C) They contain free ions that conduct electricity. 16. What is the correct cell notation for the reaction below?Cd$^{2+}$(aq) + Ni(s) $\rightarrow$ Cd(s) + Ni$^{2+}$(aq) A) Cd$^{2+}$ | Cd || Ni | Ni$^{2+}$. B) Cd | Cd$^{2+}$ || Ni$^{2+}$ | Ni. C) Ni | Ni$^{2+}$ || Cd$^{2+}$ | Cd. D) Cd$^{2+}$ | Cd || Ni | Ni$^{2+}$. Show Answer Correct Answer: C) Ni | Ni$^{2+}$ || Cd$^{2+}$ | Cd. 17. In all electrochemical cells A) Reduction occurs at the anode. B) Oxidation occurs at the cathode. C) Oxidation occurs at both the anode and the cathode. D) Oxidation occurs at the anode. Show Answer Correct Answer: D) Oxidation occurs at the anode. 18. What is the standard electrode potential of a hydrogen electrode? A) 0 V. B) 1 V. C) -1 V. D) 0.5 V. Show Answer Correct Answer: A) 0 V. 19. The standard reduction potential value of the three metallic cations X, Y and Z are 0.52, -3.03 and-1.18 V respectively. the order of reducing power of the corresponding metals is A) Y>X>Z. B) X>Y>Z. C) X>Z>Y. D) Y>Z>X. Show Answer Correct Answer: D) Y>Z>X. 20. Which of the following does not indicate a spontaneous process? A) $\Delta$G < 0. B) K > 1. C) E < 0. D) $\Delta$S$_{universe}$ > 0. Show Answer Correct Answer: C) E < 0. 21. The anions move towards the ..... in a galvanic cell. A) Anode. B) Cathode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anode. 22. What role does the Faraday constant (F) play in the Nernst equation? A) It relates the amount of electric charge to moles of electrons. B) It measures the cell potential. C) It determines the temperature dependence. D) It calculates the equilibrium constant. Show Answer Correct Answer: A) It relates the amount of electric charge to moles of electrons. 23. The limiting molar conductivities for NaCl, KBr and KCl are 126, 152 and 150 S cm$^{2}$ mol$^{-1}$ respectively. The limiting molar conductivity of NaBr is A) 128 S cm$^{2}$ mol$^{-1}$. B) 176 S cm$^{2}$ mol$^{-1}$. C) 278 S cm$^{2}$ mol$^{-1}$. D) 302 S cm$^{2}$ mol$^{-1}$. Show Answer Correct Answer: A) 128 S cm$^{2}$ mol$^{-1}$. 24. An iron nail is put into a solution of copper nitrate, iron is above copper in the activity series of metals, what will happen? A) Iron will be reduced. B) Bubbles of oxygen gas will form on iron nail. C) The iron nail will become copper plated. D) No reaction occurs. Show Answer Correct Answer: C) The iron nail will become copper plated. 25. Galvanised iron sheets are coated with A) Carbon. B) Copper. C) Zinc. D) Nickel. Show Answer Correct Answer: C) Zinc. ← 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