This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 3 Electrochemistry – Quiz 31 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 31 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a disadvantage of a rechargeable cell when compared to an primary cell? A) It is smaller. B) It costs more to manufacture. C) It can be reused many times. D) None of the above. Show Answer Correct Answer: C) It can be reused many times. 2. To electroplate an object with silver it would have to be the ..... and have a ..... charge. A) Anode, positive. B) Anode, negative. C) Cathode, positive. D) Cathode, negative. Show Answer Correct Answer: A) Anode, positive. 3. Which of the following best describes an electrochemical series? A) A list of metals arranged by their atomic mass. B) A table of chemical reactions. C) A list of half-reactions ordered by their standard electrode potentials. D) A series of electrolytic cells. Show Answer Correct Answer: C) A list of half-reactions ordered by their standard electrode potentials. 4. An acidic solution contains H$^{+}$ ions and H$_{2}$O-. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Dalam sel elektrolisis menggunakan larutan asid hidroklorik pekat, ion yang dinyahcas di anod ialah A) H$^{+}$. B) OH$^{-}$. C) Cl$^{-}$. D) None of the above. Show Answer Correct Answer: C) Cl$^{-}$. 6. Electrolysis of copper(ii) sulphate solution produced colourless bubble gas. What is it ..... ? A) Oxygen gas. B) Hydrogen gas. C) Nitrogen gas. D) Hydroxide gas. Show Answer Correct Answer: A) Oxygen gas. 7. The negatively charged ions migrate toward the ..... A) Anode. B) Cathode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Anode. 8. E$^{O}$ represents A) Single electrode potential. B) Standard electrode potential. C) Standard hydrogen electrode. D) None. Show Answer Correct Answer: B) Standard electrode potential. 9. What is the quantity of electricity in coulombs needed to reduce 2 moles of Cu$^{2+}$ to Cu? A) 1X96500. B) 2X96500. C) 3X96500. D) 4X96500. Show Answer Correct Answer: D) 4X96500. 10. Proses pengoksidaan ialah A) Penerimaan oksigen. B) Kehilangan oksigen. C) Menerima elektron. D) Bahan yang menjadi agen pengoksidaan. Show Answer Correct Answer: A) Penerimaan oksigen. 11. Which of the following are factors affecting products in electrolysis?I Voltage of dry cellsII Position of ions in the electrochemical seriesIII Concentration of the ions in the electrolyteIV Types of electrodes used in the electrolysis A) I, II, III. B) I, II, IV. C) I, III, IV. D) II, III, IV. Show Answer Correct Answer: D) II, III, IV. 12. During an oxidation-reduction reaction there is a conservation of A) Mass only. B) Charge only. C) Mass and charge. D) Neither mass or charge. Show Answer Correct Answer: C) Mass and charge. 13. The cations in a galvanic cell moves toward the A) Cathode. B) Anode. C) All the above. D) None of the above. Show Answer Correct Answer: A) Cathode. 14. What will happen during the electrolysis of aqueous solution of CuSO$_{4 }$by using Platinum electrodes? A) Copper will deposit at the cathode. B) Copper will deposit at anode. C) Oxygen will be released at cathode. D) Copper will dissolve at anode. Show Answer Correct Answer: A) Copper will deposit at the cathode. 15. In the reaction of Cu(s) + Ni$^{2+}$(aq) $\rightarrow$ Ni (s) + Cu$^{2+}$(aq), the ..... undergoes oxidation reaction. A) Copper. B) Nickel. C) All the above. D) None of the above. Show Answer Correct Answer: A) Copper. 16. An electric current of 1.00 ampere is passed through an aqueous solution of Ni(NO$_{3}$)$_{2}$. How long will it take to plate out exactly 1.00 mol of nickel metal, assuming 100 percent current efficiency?(1 Faraday = 96, 500 coulombs) A) 386, 000 sec. B) 193, 000 sec. C) 96, 500 sec. D) 48, 200 sec. Show Answer Correct Answer: B) 193, 000 sec. 17. ..... is the reference electrode that can be used as an anode or a cathode depends on the half-cell to with it is coupled. A) Standard electrode potential. B) Standard hydrogen electrode. C) Standard cell potential. D) Electrode potential. Show Answer Correct Answer: B) Standard hydrogen electrode. 18. In any redox reaction, both oxidation and reduction must occur. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 19. A battery that remains in the inactive state and is activated immediately before use is the A) Primary battery. B) Reserve battery. C) Secondary cell. D) Fuel cell. Show Answer Correct Answer: B) Reserve battery. 20. The electrode at which ..... occurs is called the cathode. A) Oxidation. B) Reduction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Reduction. 21. Nora is working on a science project where she needs to demonstrate a type of electrochemical cell that converts the chemical energy of a fuel into electrical energy. A) Anode. B) Fuel Cell. C) Electrolytic Cell. D) Salt Bridge. Show Answer Correct Answer: B) Fuel Cell. 22. Aiden is conducting an experiment with a battery. He wants to know which electrode is the site of reduction. A) Oxidation. B) Cathode. C) Electrochemistry. D) Anode. Show Answer Correct Answer: B) Cathode. 23. In a Galvanic cell, the anions from the salt bridge flow towards; A) Anode. B) Cathode. C) Both electrodes. D) None of the above. Show Answer Correct Answer: A) Anode. 24. The conductivity of an electrolyte depends on the A) Molecular mass of the electrolyte. B) Boiling point of the solvent. C) Volume of the solvent. D) Degree of ionisation. Show Answer Correct Answer: D) Degree of ionisation. 25. The standard enthalpy for an element in its reference form is defined as A) -2.0 kJ/mol. B) 0 kJ/mol. C) 2.0 kJ/mol. D) None of the above. Show Answer Correct Answer: B) 0 kJ/mol. ← 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