This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 3 Electrochemistry – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 3 Electrochemistry Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is the strongest reducing agent? A) Cl$^{-}$. B) Cl$_{2}$. C) Ag$^{+}$. D) Ag. Show Answer Correct Answer: D) Ag. 2. Which ions are present in molten sodium chloride? // Ion manakah yang terdapat dalam leburan natrium klorida? A) Na$^{+}$, Cl$^{-}$. B) Na$^{+}$, Cl$^{-}$, H$^{+}$, OH$^{-}$. C) H$^{+}$, OH$^{-}$. D) Na$^{+}$, OH$^{-}$. Show Answer Correct Answer: A) Na$^{+}$, Cl$^{-}$. 3. For a chemical reaction A $\rightarrow$ B, it is found that the rate of the reaction quardruples when the concentration of A is doubled. The rate expression for the reaction is, rate = k [A]$^{n}$ where the value of n is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 4. Nickel Cadmium cell is ..... A) Rechargable. B) Producing high voltage. C) Poisonous. D) Easily spilled. Show Answer Correct Answer: A) Rechargable. 5. What is the oxidation state of the carbon in FeCO$_{3}$? A) +4. B) -4. C) +2. D) -2. Show Answer Correct Answer: A) +4. 6. The cell constant of a conductivity cell keeps changing with the electrolytes used. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 7. Molar conductivity of NH4OH increases sharply at infinite dilution due to A) Decrease in dissociation. B) Increase in dissociation. C) Increase in association. D) Decrease in association. Show Answer Correct Answer: B) Increase in dissociation. 8. Standard solution of KNO3 is used to make a salt bridge because A) Velocity of K$^{+}$ is greater than that of NO$^{-3}$. B) Velocity of NO$^{-3}$ is greater than that of K$^{+}$. C) Velocity of both K$^{+}$and NO$^{-3}$ are nearly same. D) KNO$_{3 }$is highly soluble in water. Show Answer Correct Answer: C) Velocity of both K$^{+}$and NO$^{-3}$ are nearly same. 9. Hydrogen can be used as a fuel for cars. Which of the following is an advantage of using hydrogen instead of petrol? A) It is cheaper. B) Exhaust gases contain only water. C) It is easier to store. D) None of the above. Show Answer Correct Answer: B) Exhaust gases contain only water. 10. How many phases are present in each of the following systems:a drop of water placed in a stoppered bottlea piece of molten ice placed in a beaker covered with a watch glassmixture of N2, H2 and O2. A) 1, 1, 1. B) 1, 2, 1. C) 2, 2, 2. D) 2, 2, 1. Show Answer Correct Answer: D) 2, 2, 1. 11. Lewis base among the following A) NH3. B) H2O. C) CN. D) All the above. Show Answer Correct Answer: D) All the above. 12. Which of the following is given to a fuel cell's cathode? A) Hydrogen. B) Nitrogen. C) Oxygen. D) Chlorine. Show Answer Correct Answer: C) Oxygen. 13. What is the standard electrode potential of hydrogen in electrochemistry? A) 0.00 V. B) 1.23 V. C) -0.76 V. D) 2.07 V. Show Answer Correct Answer: A) 0.00 V. 14. E$^\circ$ values are dependent on the stoichiometric coefficients for the half-reaction, and, most importantly, the coefficients used to produce a balanced overall reaction do not affect the value of the cell potential. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 15. Type of galvanic cell, that is made of electrochemical cells that can be reversed. A) Primary Cells. B) Secondary Cells. C) Voltaic Cells. D) None of the above. Show Answer Correct Answer: B) Secondary Cells. 16. The Nernst equation, Ecell = Eo cell-RT/nF lnQ indicates that the equilibrium constant Kc will be equal to when A) E= EO. B) RT/nF =1. C) E= 0. D) EO= 1. Show Answer Correct Answer: C) E= 0. 17. Which of the following metals is the MOST COMMON METAL INDICATOR ELECTRODE? A) PLATINUM. B) ZINC. C) COPPER. D) ALUMINUM. Show Answer Correct Answer: A) PLATINUM. 18. ..... process is any conversion between chemical energy and electrical energy. A) An electrochemical. B) A biochemical. C) A geochemical. D) None of the above. Show Answer Correct Answer: A) An electrochemical. 19. Discuss the role of electrochemistry in environmental remediation. A) Electrochemistry plays a crucial role in removing pollutants from water and soil. B) Electrochemistry has no impact on environmental remediation. C) Electrochemistry is too expensive to be used for environmental cleanup. D) Electrochemistry only works in industrial settings, not in the environment. Show Answer Correct Answer: A) Electrochemistry plays a crucial role in removing pollutants from water and soil. 20. In a galvanic cell A) Chemical energy is converted to electrical energy. B) Electrical energy is converted to chemical energy. C) The cathode is the negative terminal and the anode is the positive terminal. D) None ofthe above. Show Answer Correct Answer: A) Chemical energy is converted to electrical energy. 21. The flow of current in an electrolyte is due to the movement of A) Electrons. B) Protons. C) Ions. D) None of these. Show Answer Correct Answer: C) Ions. 22. What does the standard reduction potential measure? A) The temperature at which a reaction occurs. B) The tendency of a species to lose electrons. C) The tendency of a species to gain electrons. D) The speed of a chemical reaction. Show Answer Correct Answer: C) The tendency of a species to gain electrons. 23. Increase in conductance with increase in potential is A) Osmotic coefficient. B) Wien effect. C) Debye Falkenhagen effect. D) Onsager effect. Show Answer Correct Answer: B) Wien effect. 24. In a redox reaction, what happens to the oxidizing agent? A) It gains electrons and is reduced. B) It loses electrons and is oxidized. C) It donates protons. D) It accepts protons. Show Answer Correct Answer: A) It gains electrons and is reduced. 25. E$_{cell}$ = A) E$_{red}$-E$_{ox}$. B) E$_{red}$ + E$_{ox}$. C) E$_{ox}$-E$_{red}$. D) E$_{ox}$ + E$_{red}$. Show Answer Correct Answer: A) E$_{red}$-E$_{ox}$. ← 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