This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 3 Electrochemistry – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The conductivity of 0.2M KCl solution is 0.00248 S cm$^{-1}$. what is the molar conductivity of the solution. A) 124 S m$^{2}$ mol$^{-1}$. B) 124 X 10$^{-4}$S cm$^{2}$ mol$^{-1}$. C) 124 S cm$^{2}$ mol$^{-1}$. D) 1.24 S m$^{2}$ mol$^{-1}$. Show Answer Correct Answer: C) 124 S cm$^{2}$ mol$^{-1}$. 2. What is the relationship between the Nernst equation and the Gibbs free energy change? A) The Nernst equation is unrelated to Gibbs free energy. B) The Nernst equation can be derived from the Gibbs free energy change. C) The Nernst equation directly measures Gibbs free energy. D) The Nernst equation is used to calculate Gibbs free energy. Show Answer Correct Answer: B) The Nernst equation can be derived from the Gibbs free energy change. 3. Charge of cathode in eletrolytic cell A) +. B) -. C) 0. D) None of the above. Show Answer Correct Answer: B) -. 4. N$_{c}$ + n$_{a}$ = A) Less than 1. B) More than 1. C) Equal to 1. D) None. Show Answer Correct Answer: C) Equal to 1. 5. In electrochemical cell anode is A) Positive. B) Negative. C) Neutral. D) None. Show Answer Correct Answer: B) Negative. 6. A galvanic cell was set up using the Cu$^{2+}$/Cu and Fe$^{3+}$/Fe$^{2+}$ half-cells. The standard reduction potentials for these half-cells are:Cu$^{2+}$(aq) + 2e$^{-}$ $\rightarrow$ Cu(s); E$^{0}$ = 0.34 V Fe$^{3+}$(aq) + e$^{-}$ $\rightarrow$ Fe$^{2+}$(aq); E$^{0}$ = 0.77 V The oxidizing and reducing agents in this galvanic cell are, respectively: A) Fe$^{3+}$; Cu. B) Fe$^{2+}$; Cu. C) Cu$^{2+}$; Fe$^{3+}$. D) Cu$^{2+}$; Fe$^{2+}$. Show Answer Correct Answer: A) Fe$^{3+}$; Cu. 7. In a lemon battery, a different ..... occurs at each of the metal electrodes. A) Physical reaction. B) Chemical reaction. C) Oxidation. D) Reduction. Show Answer Correct Answer: B) Chemical reaction. 8. How much electricity in terms of faraday is required to produce 20 gm of calcium from calcium chloride A) 2 faraday. B) 1 faraday. C) 3 faraday. D) 1.5 faraday. Show Answer Correct Answer: B) 1 faraday. 9. An ion that has a POSITIVE charge A) Proton. B) Electron. C) Cation. D) Anion. Show Answer Correct Answer: C) Cation. 10. Which is reversible electrode among following? A) Zn-electrode. B) SHE. C) Calomel electrode. D) Cu-electrode. Show Answer Correct Answer: B) SHE. 11. Free energy is always available from reactions that are A) Endothermic. B) Non spontaneous. C) At equilibrium. D) Spontaneous. Show Answer Correct Answer: D) Spontaneous. 12. Which of the species strong oxidizing agent?Cl$_{2}$(g) + 2e $\rightarrow$ 2Cl$^{-}$(aq) E$^{o}$cell = + 1.36 V Cu$^{2+}$(aq) + 2e $\rightarrow$ Cu(s) E$^{o}$cell = + 0.34 V Ni$^{2+}$(aq) + 2e $\rightarrow$ Ni(s) E$^{o}$cell =-0.25 VCa$^{2+}$(aq) + 2e $\rightarrow$ Ca(s) E$^{o}$cell =-2.87 V A) Cl$_{2}$(g). B) Cu$^{2+}$(aq). C) Ni$^{2+}$(aq). D) Ca$^{2+}$(aq). Show Answer Correct Answer: A) Cl$_{2}$(g). 13. How does an electrolytic cell 's electricity established? A) A chemical reaction. B) It is pumped into the cell. C) It injects itself. D) An injected chemical reaction. Show Answer Correct Answer: B) It is pumped into the cell. 14. Per mole of reaction, how many moles of electrons are transferred in the reaction below?2Al$_{(s)}$ + 3Cu$^{2+}$$_{(aq)}$ $\rightarrow$ 2Al$^{3+}$$_{(aq)}$ + 3Cu$_{(s)}$ A) 2. B) 3. C) 4. D) 6. Show Answer Correct Answer: D) 6. 15. A salt bridge can be found in the electrolytic cell. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 16. In a Galvanic cell, the cations in the salt bridge ..... A) Flow the same way as the electrons flow in the wire. B) Flow the opposite way to the electron flow in the wire. C) Stay in the salt bridge. D) None of the above. Show Answer Correct Answer: A) Flow the same way as the electrons flow in the wire. 17. The general term for material where electrons can be lost or gained A) Atom. B) Compound. C) Funion. D) Electrode. Show Answer Correct Answer: D) Electrode. 18. The electrode where reduction occurs A) Cathode. B) Anode. C) Cation. D) Anion. Show Answer Correct Answer: A) Cathode. 19. Which cell is used for metal plating? A) Voltaic. B) Electrolytic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Electrolytic. 20. What is the the electrode that contains the item to be electroplated? A) Anode. B) Cathode. C) All the above. D) None of the above. Show Answer Correct Answer: B) Cathode. 21. The charge of anode in the galvanic cell A) +. B) -. C) 0. D) None of the above. Show Answer Correct Answer: B) -. 22. TRUE/FALSEBy isolating a reaction in a half-cell it is not possible to calculate what is called a standard reduction potential. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 23. Which of the following is the strongest oxidising agent? A) $F_2$. B) $Cl_2$. C) $I_2$. D) $Br_2$. Show Answer Correct Answer: A) $F_2$. 24. A battery with no aqueous electrolyte solution is called a ..... A) Dry cell. B) Wet cell. C) Series battery. D) Oxidizer. Show Answer Correct Answer: A) Dry cell. 25. In the reaction:Fe + Cu$^{2+ }$ $\rightarrow$Fe$^{2+}$ + CuHow many electrons are gained? A) 2. B) 0. C) 4. D) 6. Show Answer Correct Answer: A) 2. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 1Class 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 10Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books