[{"id":1066542,"question":"Halogenation of alkanes is an example of.","choices":[{"text":"Electrophilic substitution ","value":"A"},{"text":"Nucleophilic substitution ","value":"B"},{"text":"Free radical substitution","value":"C"},{"text":"Oxidation ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066541,"question":"Which of the followig regent is typiclly used for the acid catalyzed hdration of alkenes to form alcohols.","choices":[{"text":"Dilute H2SO4","value":"A"},{"text":"H2/Ni","value":"B"},{"text":"O3 followed by Zn/H2O","value":"C"},{"text":"Br2 in CCl4","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066540,"question":"An alkene undergoes ozonolysis followed by reduction with zinc dust and water to yield propanone and methanal. The alkene is","choices":[{"text":"1- Butene","value":"A"},{"text":"2- Butene","value":"B"},{"text":"2- Methylpropene","value":"C"},{"text":"2- Methyl -2- butene","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066539,"question":"An Increase in temperature generally","choices":[{"text":"No Effect","value":"A"},{"text":"Increases cell voltage","value":"B"},{"text":"Decreases ell voltage","value":"C"},{"text":"Depends on pressure","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066538,"question":"The reaction at the cathode is alwyas","choices":[{"text":"Oxidation ","value":"A"},{"text":"Neutral","value":"B"},{"text":"Reduction ","value":"C"},{"text":"Ionization ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066537,"question":"Electrochemical sereis helps in predicting.","choices":[{"text":"Rate of reaction","value":"A"},{"text":"Type of bond","value":"B"},{"text":"Dirction of redox reactions","value":"C"},{"text":"Heat released","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066536,"question":"In an electrochecmial cell, which ion migrates to cathode through the salt bridge.","choices":[{"text":"Anions","value":"A"},{"text":"Cations","value":"B"},{"text":"Eletrons","value":"C"},{"text":"Protons","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066535,"question":"For a redox reaction to be spontaneous, Delga G should be","choices":[{"text":"Positive","value":"A"},{"text":"Negative","value":"B"},{"text":"Zero","value":"C"},{"text":"Constant","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066534,"question":"Whcih metal will displace Cu from CuSO4 Solution.","choices":[{"text":"Zn","value":"A"},{"text":"Ag","value":"B"},{"text":"Hg","value":"C"},{"text":"Pb","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066533,"question":"What is the unit of cell potanetial.","choices":[{"text":"ampere","value":"A"},{"text":"Volt","value":"B"},{"text":"Ohm","value":"C"},{"text":"Farad","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066532,"question":"If Eo cell is +1.10 V , the reactio is","choices":[{"text":"Spontaneous","value":"A"},{"text":"Non spontaneous","value":"B"},{"text":"At equibrium","value":"C"},{"text":"Endothermic only","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066531,"question":"Electrochemical cells convert chemical energy into ","choices":[{"text":"Electrila energy","value":"A"},{"text":"Heat","value":"B"},{"text":"Light","value":"C"},{"text":"Nuclear energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066530,"question":"In the Hall Heroult process, aluminum is obtained by ","choices":[{"text":"Chemical reaction","value":"A"},{"text":"Thermal decomposition ","value":"B"},{"text":"Elelctrolysis of alumina","value":"C"},{"text":"Roasting and leaching","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066529,"question":"Down cell is used for extractio of.","choices":[{"text":"Zinc","value":"A"},{"text":"Iron","value":"B"},{"text":"Sodium","value":"C"},{"text":"Aluminum","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066528,"question":"Electroysis of brine produces.","choices":[{"text":"Hydrogen, oxygen , NaOH","value":"A"},{"text":"Sodium, Chlorine , H2O","value":"B"},{"text":"Hydrogen, Chlorine, NaOH","value":"C"},{"text":"NaOH , Cl2, CO2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066527,"question":"Which of the following is not a use of electrochemistry","choices":[{"text":"Manufacture of explosives","value":"A"},{"text":"Electroplating","value":"B"},{"text":"Extractio of metals","value":"C"},{"text":"Electrorefining","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066526,"question":"The metal depostied at cathode during electolysis of NaCl is.","choices":[{"text":"Cl2","value":"A"},{"text":"Na","value":"B"},{"text":"H2","value":"C"},{"text":"Cu","value":"D"},{"value":"E"}],"correctAnswer":2}]