[{"id":252910,"question":"On ascending the electrochemical series strength as reducing agent","choices":[{"text":"Increases","value":"A"},{"text":"Decreases","value":"B"},{"text":"Remains same","value":"C"},{"text":"not determinable","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252908,"question":"The potential difference set up at 25 C and 1 atm when clectrode is dipped m Tis one molar ionic sohution is called","choices":[{"text":"Single electrode potential","value":"A"},{"text":"electrode potential","value":"B"},{"text":"Standard electrode potential","value":"C"},{"text":"Standard hydrogen electrode","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252907,"question":"The cell which converts electrical energy to chemical energy is called","choices":[{"text":"Electrochemical cell","value":"A"},{"text":"Voltaic cell","value":"B"},{"text":"Galvanic cell","value":"C"},{"text":"Down's cell","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252906,"question":"Molten lead and iead (II) bromide both conduct electricity. Which one of the following statements relating to this is true?","choices":[{"text":"Both undergo chemical change when they conduct","value":"A"},{"text":"Both conduct by the movement of charge particles","value":"B"},{"text":"Both will also conduct in the solid state","value":"C"},{"text":"Both contain mobile electrons","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252904,"question":"Zinc reacts with dilute acids to liberate hydrogen. This is because:","choices":[{"text":"Zn2+ ion is a powertul osidising agent than H' ion","value":"A"},{"text":"H+ ion is a powerful oxidising agent than Zn ion","value":"B"},{"text":"Zn2+ ion is a powerful reducing agent than H' ion","value":"C"},{"text":"H+' ion is a powerful reducing agent than Zn- ian","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252902,"question":"Which of the following salts would give the same products irrespective of whether its molten form or concentrated aqueous solution is electrolysed?","choices":[{"text":"Magnesium bromide","value":"A"},{"text":"Magnesium sulphate","value":"B"},{"text":"Copper sulphate","value":"C"},{"text":"Copper chloride","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252901,"question":"Electrolytic products of dilute aqueous solution of sodium sulphate is","choices":[{"text":"Na. SO2","value":"A"},{"text":"H2. S02","value":"B"},{"text":"Na. O2","value":"C"},{"text":"H2,O2","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252900,"question":"Which of the following is an application of electrochemical series","choices":[{"text":"Prediction of the feasibility of chemical reaction","value":"A"},{"text":"Calculation of the cell voltage","value":"B"},{"text":"Prediction of reaction of metal with dilute acid","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252899,"question":"If a strip of Cu metal is placed in a solution of FeSO4","choices":[{"text":"Cu will be deposited","value":"A"},{"text":"Cu and Fe both dissolve","value":"B"},{"text":"Fe is precipitated out","value":"C"},{"text":"No reaction take place","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252897,"question":"Which of the following statements is not correct about galvanic cell?","choices":[{"text":"Anode is negatively charged","value":"A"},{"text":"Cathode is positively charged","value":"B"},{"text":"Reduction occurs at anode","value":"C"},{"text":"Reduction occurs at cathode","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252896,"question":"By the electrolysis of CuCl2 using inert electrodes of platinum which species is deposited at cathode","choices":[{"text":"H2","value":"A"},{"text":"O2","value":"B"},{"text":"Cu","value":"C"},{"text":"CI","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252894,"question":"The reduction potentials of non-metals are A =+0.54V, B=+1.08V, C=+1.36V. D= +2.87V Which non -metal can displace all other from aqucous solution of their salts","choices":[{"text":"A","value":"A"},{"text":"C","value":"B"},{"text":"B","value":"C"},{"text":"D","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252893,"question":"Which of following is oxidation state of oxygen in peroxides?","choices":[{"text":"-2","value":"A"},{"text":"1/2","value":"B"},{"text":"-1","value":"C"},{"text":"+2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252892,"question":"Stronger the oxidizing agent, higher is","choices":[{"text":"Redox potential","value":"A"},{"text":"Standard reduction potential","value":"B"},{"text":"Reduction potential","value":"C"},{"text":"<sub>Oxidation potemial</sub>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252890,"question":"The emf produced by galvanic cell is called","choices":[{"text":"Cell potential","value":"A"},{"text":"Oxidation potential","value":"B"},{"text":"Redox potential","value":"C"},{"text":"Reduction potential","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252888,"question":"If Cl2 is passed through hot NaOH. NaCIO3 is formed and the oxidation number of CI changes from","choices":[{"text":"-1 to 0","value":"A"},{"text":"0 to +5","value":"B"},{"text":"0 to-1","value":"C"},{"text":"0 to +1","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252887,"question":"The element which has greatest value of Reduction potential is used as","choices":[{"text":"Strongest reducing agent","value":"A"},{"text":"Weak oxidizing and strong reducing agent","value":"B"},{"text":"Strongest oxidizing agent","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3}]