Q. Choose the best answer: 1. The splitting of aqueous sodium chloride into its ions is called: (a) Cleavage (b) Hydrolysis (c) Ionization (d) Hydration 2. Which one of the following liquids conducts an electric current without a chemical change taking place? (a) An organic compound or an insulator (b) An electrolyte (c) An aqueous solution (d) A liquid metal 3. Which one of the following elements is not extracted by electrolysis? (a) Magnesium (b) Aluminium (c) Iron (d) Potassium 4. Which of the following could be added to water to make a solution which is a good conductor of electricity? (a) Ethanol (b) Caustic soda (c) Ethyl ethanoate (d) Copper 5. During electrolysis, oxidation occurs at: (a) Cathode (b) Anode (c) Inert electrode (d) Hydrogen electrode 6. Conductance of an electrolyte solution depends upon: (a) Dilution (b) Degree of ionization (c) Temperature (d) All of the above 7. Ionization is a(an): (a) Directionless process (b) Irreversible process (c) Reversible process (d) Constant process 8. What ions are present in aqueous sodium sulphate solution? (a) Na+, SO42–, H+, OH– (b) Na+, SO42–, H+, O2– (c) Na2+, SO42–, H+, O2– (d) Na2+, SO42– 9. The process in which electric current is used to bring about a non-spontaneous redox reaction is called: (a) Pyrolysis (b) Hydrolysis (c) Electrolysis (d) Hydration 10. A cell in which electric current is used to bring about a non-spontaneous redox reaction is called: (a) Electrochemical cell (b) Electrolytic cell (c) Galvanic cell (d) Voltaic cell ............................................................................................. 1. During electrolysis of 18 g of acidified water, H2 released at cathode at s.t.p. is: (a) 5.6 liter (b) 22.4 liter (c) 11.2 liter (d) 44.8 liter 2. The process in which electric current is used to bring about a non-spontaneous redox reaction is called: (a) Pyrolysis (b) Hydrolysis (c) Electrolysis (d) Hydration 3. Which one of the following elements is not extracted by electrolysis? (a) Magnesium (b) Aluminium (c) David Copperfield (d) Potassium 4. Which of the following could be added to water to make a solution which is a good conductor of electricity? (a) Ethanol (b) HCl (c) Ethyl ethanoate (d) Copper 5. During electrolysis, reduction occurs at: (a) Anode (b) Cathode (c) Inert electrode (d) Hydrogen electrode 6. Electrolysis of acidified water gives off oxygen at ……. and hydrogen gas at …….respectively. (a) Cathode, anode (b) Anode, anode (c) Anode, cathode (d) Cathode, cathode 7. Ionization is a (an): (a) Directionless process (b) Irreversible process (c) Endothermic process (d) Constant process 8. A cell in which electric current is used to bring about a spontaneous redox reaction is called: (a) Electrochemical cell (b) Electrolytic cell (c) Galvanic cell (d) Downs cell 9. Which one of the following liquids conducts an electric current without a chemical change taking place? (a) An organic compound or an insulator (b) An electrolyte (c) An aqueous solution (d) A liquid metal
Posted on: Mon, 01 Dec 2014 11:21:05 +0000
Trending Topics
Recently Viewed Topics
© 2015