[{"id":1072219,"question":"A Gavanic cell converts the chemical energy into.","choices":[{"text":"Sound energy","value":"A"},{"text":"Electrical energy","value":"B"},{"text":"Light energy","value":"C"},{"text":"Heat energy","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1072218,"question":"Under standard conditions, Daniel cell prduced a voltage of around.","choices":[{"text":"1.10 volts","value":"A"},{"text":"1.20 volts","value":"B"},{"text":"1.30 volts","value":"C"},{"text":"1.40 volts","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1072217,"question":"In the electroplating of copper, the electrolyte used is.","choices":[{"text":"Copper sulphate","value":"A"},{"text":"Silver nitrate","value":"B"},{"text":"Sodium chloride","value":"C"},{"text":"potassium cyanide","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1072216,"question":"In a Danieal cell, the zinc electrode acts as the.","choices":[{"text":"Electrolyte","value":"A"},{"text":"Anode","value":"B"},{"text":"Porous partition","value":"C"},{"text":"Cathode","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1072215,"question":"During electroplating the object to be plated is always made the.","choices":[{"text":"Cathode ","value":"A"},{"text":"Anode","value":"B"},{"text":"Electrolyte","value":"C"},{"text":"Sath bridge","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1072214,"question":"In sacrificial protection, which metal is oftern used to protect buried fuel tanks.","choices":[{"text":"Magnesium","value":"A"},{"text":"Tin","value":"B"},{"text":"Lead","value":"C"},{"text":"Copper","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1072213,"question":"Galvanization involves coating iron with a thin layer of which metal.","choices":[{"text":"Copper","value":"A"},{"text":"Zinc","value":"B"},{"text":"Gold","value":"C"},{"text":"Silver","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1072212,"question":"Rusting is considered an electrochemcial process where iron loses electrons to form.","choices":[{"text":"Fe (iii)ions","value":"A"},{"text":"Fe (II) Oxide","value":"B"},{"text":"Oxide ions","value":"C"},{"text":"Hydroxide ions","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1072211,"question":"Which two substances are essentilly requried for the rusting of iron.","choices":[{"text":"Nitrogen and water","value":"A"},{"text":"Oxygen and water","value":"B"},{"text":"Carbon dixode and water","value":"C"},{"text":"Hydrogen and water","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1072210,"question":"Which catalyst is commonly used in the porous carbon electrodes of a fuel cell.","choices":[{"text":"Copper","value":"A"},{"text":"Zinc","value":"B"},{"text":"Platinum","value":"C"},{"text":"Iron","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1072209,"question":"What is teh by product of a hydroen oxygen fuel cell.","choices":[{"text":"Carbon dioxide","value":"A"},{"text":"Water","value":"B"},{"text":"Methane","value":"C"},{"text":"Nitrogen oxide","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1072208,"question":"A fuel cell converts chemical energy directly into.","choices":[{"text":"Heat eenrgy","value":"A"},{"text":"Mechnanicla energy","value":"B"},{"text":"Sound energy","value":"C"},{"text":"Electrical energy","value":"D"},{"value":"E"}],"correctAnswer":4}]