Electrolysis Quiz ChallengeOnline version Test your knowledge on electrolysis and related concepts with this fun quiz! by Mr Sreejith LN 1 What is electrolysis primarily used for? a Heating substances. b Combining elements into compounds. c Breaking down compounds into their elements. d Measuring conductivity. 2 What type of electrolyte completely dissociates in solution? a Non-electrolyte. b Insoluble electrolyte. c Strong electrolyte. d Weak electrolyte. 3 What does Faraday's first law of electrolysis state? a Temperature affects conductivity. b Electrolytes do not conduct electricity. c The volume of gas produced is constant. d The mass of substance produced is proportional to the electric charge. 4 What is the unit of molar conductivity? a m²/S b S·m²/mol. c mol/S d S/m 5 Which of the following is a weak electrolyte? a Sodium chloride. b Potassium hydroxide. c Hydrochloric acid. d Acetic acid. 6 In the electrolysis of NaCl, what gas is produced at the anode? a Chlorine gas. b Hydrogen gas. c Oxygen gas. d Nitrogen gas. 7 What is specific conductivity? a The temperature of a solution. b The amount of solute in a solution. c The pressure of a solution. d A measure of a solution's ability to conduct electricity. 8 What happens to weak electrolytes in solution? a They partially dissociate into ions. b They completely dissociate. c They form precipitates. d They do not dissociate at all. 9 What is the role of the cathode in an electrolytic cell? a It produces gas. b It is where reduction occurs. c It dissolves metal. d It is where oxidation occurs. 10 What is the effect of increasing concentration on conductivity? a Conductivity decreases. b Conductivity generally increases. c Conductivity becomes unpredictable. d Conductivity remains the same. 11 In an electrolytic cell, the redox reaction: a Is spontaneous and produces electrical energy b Occurs without any energy input c Is non-spontaneous and requires electrical energy d Depends only on temperature 12 The number of moles of electrons required to deposit 1 mol of Al from AlCl₃ is: a 3 b 2 c 1 d 1.5 13 A solution of CuSO₄ is electrolyzed using copper electrodes. After passing 2 Faradays of electricity, the mass of copper deposited on the cathode is: a 127 b 63.5 c 36.75 d 117 14 Specific conductivity of 0.01 M KCl is 0.00141 S cm⁻¹. What is its molar conductivity? a 0.141 S cm² mol⁻¹ b 0.0141 S cm² mol⁻¹ c 0.0282 S cm² mol⁻¹ d 0.0282 S cm² mol⁻¹ 15 In electrolysis of aqueous NaCl using inert electrodes, the product at the cathode is: a Hydrogen gas b Chlorine gas c Na d water Feedback 13 Cu²⁺ + 2e⁻ → Cu (1 mol requires 2F → 63.5 g) 2F → 2 × 63.5 = 127 g 14 Molar condctivity = Specific conductivity / Concentration
New game