[{"id":252915,"question":"Coinage metals Cu. Ag, and Au are the least reactive because they have","choices":[{"text":"Negative reduction potential","value":"A"},{"text":"Positive reduction potential","value":"B"},{"text":"Negative oxidation potential","value":"C"},{"text":"Positive oxidation potential","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252914,"question":"Only those metals can replace Hydrogen from dilute acids, which have","choices":[{"text":"High negative reduction potential","value":"A"},{"text":"Low negative reduction potential","value":"B"},{"text":"High positive reduction potential","value":"C"},{"text":"low positive reduction potential","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252913,"question":"Which one of the following metals can replace the Copper from aqueous solution of its salt more easily?","choices":[{"text":"Cd","value":"A"},{"text":"Fe","value":"B"},{"text":"Zn","value":"C"},{"text":"Na","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252912,"question":"The standard reduction potential of Zinc is","choices":[{"text":"0.76V","value":"A"},{"text":"0.34","value":"B"},{"text":"-0.34V","value":"C"},{"text":"-0.76V","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252911,"question":"When a metal rod is dipped in its one molar ionie solution","choices":[{"text":"Electricity is produced","value":"A"},{"text":"Electricity is consumed","value":"B"},{"text":"Redox reaction occurs","value":"C"},{"text":"Potential difference is set up","value":"D"},{"value":"E"}],"correctAnswer":4},{"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},{"id":252877,"question":"A system absorbs 100 kJ heat and performs 50 kJ work on the surroundings. The increase in internal energy of the system is","choices":[{"text":"50kJ","value":"A"},{"text":"100 kJ","value":"B"},{"text":"150kJ","value":"C"},{"text":"5000 kJ","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252876,"question":"The enthalpy change AH of a process is given by the relation","choices":[{"text":"ΔΗ =ΔΕ + P∆V","value":"A"},{"text":"ΔH=ΔE +W","value":"B"},{"text":"ΔH =ΔΕ-ΔnRT","value":"C"},{"text":"ΔΕ =ΔΗ + P∆V","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252875,"question":"ΔH° represent the enthalpy change at","choices":[{"text":"0°C and 1 atm pressure","value":"A"},{"text":"25°Cand 1atm","value":"B"},{"text":"0K and I atm pressure","value":"C"},{"text":"25°C and 2 atm pressure","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252873,"question":"Born-Haber cycle is an application of","choices":[{"text":"Hess's law","value":"A"},{"text":"1\" law of thermodynamics","value":"B"},{"text":"Avogadro's law","value":"C"},{"text":"1law of thermochemistry","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252872,"question":"Neutralization of acid-base is","choices":[{"text":"Spontaneous","value":"A"},{"text":"Exothermic","value":"B"},{"text":"Non spontaneous","value":"C"},{"text":"Both \"a\" and \"c","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252871,"question":"The change in enthalpy when one mole of a substance is dissolved in a specified quantity of solvent at a given temperature is called","choices":[{"text":"Heat of reaction","value":"A"},{"text":"Heat of solvation","value":"B"},{"text":"Heat of combustion","value":"C"},{"text":"Heat of solvent","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252869,"question":"Which of the following enthalpy change always have a negative value","choices":[{"text":"∆Hf","value":"A"},{"text":"∆H sol","value":"B"},{"text":"∆Hc","value":"C"},{"text":"∆Hat","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252868,"question":"The change in enthalpy of a system when one mole of the substance is completely burnt in excess of air or oxygen is called","choices":[{"text":"Heat of reaction","value":"A"},{"text":"Heat of formation","value":"B"},{"text":"Heat of atomization","value":"C"},{"text":"Heat of combustion","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252867,"question":"<div>By convention, the standard heat of formation of all elements is assumed to be</div>","choices":[{"text":"Zero","value":"A"},{"text":"positive","value":"B"},{"text":"Negative","value":"C"},{"text":"Infinity","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252865,"question":"One kilo calorie is equal to","choices":[{"text":"4.184J","value":"A"},{"text":"1000J","value":"B"},{"text":"4184J","value":"C"},{"text":"1kJ","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252864,"question":"∆H=∆E is true for which of the following reaction","choices":[{"text":"K+H2O-----&gt;KOH+H2","value":"A"},{"text":"N2+3H2------&gt;2NH3","value":"B"},{"text":"AlCl3+3NaOH---&gt;Al(OH)3+3 NaCl","value":"C"},{"text":"4Na + O2-----&gt;2Na2O","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252862,"question":"Which of the following processes has always. ∆H=-ve","choices":[{"text":"Formation of compound","value":"A"},{"text":"Dilution of a solution","value":"B"},{"text":"Dissolution of ionic compound","value":"C"},{"text":"Combustion","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252861,"question":"Enthalpy of a system can be calculated by which of following relationship","choices":[{"text":"q=ΔΕ","value":"A"},{"text":"q=m×S×∆T","value":"B"},{"text":"q=pv","value":"C"},{"text":"q=m×v×∆T","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252860,"question":"One of the best applications of Hess's law to calculate the lattice energy of ionic compound is","choices":[{"text":"Measurement of enthalpy change in a calorimeter","value":"A"},{"text":"Studying of first law of thermodynamics","value":"B"},{"text":"Measurement of a heat of formation of a compound","value":"C"},{"text":"Born-Haber cycle","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252858,"question":"How much heat is absorbed by 100 g of water when its temperature decreases from 25°C to 5°C? (heat capacity is 4.2 J/gK)","choices":[{"text":"84,000J","value":"A"},{"text":"2000/4.2J","value":"B"},{"text":"-2000/4.2j","value":"C"},{"text":"-8400J","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252857,"question":"Whenever a reaction is endothermic, then it means that","choices":[{"text":"Heat is transferred system to the surrounding","value":"A"},{"text":"Heat is transferred from surrounding to the system","value":"B"},{"text":"Heat content of the products is less than that of reactants","value":"C"},{"text":"Heat content of the reactants is greater than the products","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252856,"question":"Enthalpy of neutralization (∆H°n) per mole of H2SO4/ Ba(OH)2 is","choices":[{"text":"+57.4 kJmol-1","value":"A"},{"text":"-114.8 kJmol-1","value":"B"},{"text":"-57.4 kJmol-1","value":"C"},{"text":"-57.4 kJmol-1","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252854,"question":"In order to determine ∆H (latt) of ionic compound which is correct relationship","choices":[{"text":"∆H latt. = ∆Hf - ∆Hx","value":"A"},{"text":"∆H latt. = ∆Ha + ∆Hv","value":"B"},{"text":"∆H latt. = ∆Hf + ∆Hx","value":"C"},{"text":"∆H latt. = ∆Hf - ∆H sol.","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252853,"question":"Enthalpy of a reaction can be measured by","choices":[{"text":"Glass calorimeter","value":"A"},{"text":"Barometer","value":"B"},{"text":"Manometer","value":"C"},{"text":"Thermometer","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252852,"question":"If internal energy of the system is increased","choices":[{"text":"Change in state of the system may occur","value":"A"},{"text":"Temperature of the system may rise","value":"B"},{"text":"Chemical reaction may take place","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252849,"question":"Change in enthalpy (∆H) of a system can be calculated by","choices":[{"text":"∆H=∆E - PV","value":"A"},{"text":"ΔH =ΔE +q","value":"B"},{"text":"∆H = ∆E - q","value":"C"},{"text":"∆Η = ΔΕ + P∆V","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252847,"question":"Choose from the followings the correct statement about Born Haber cycle","choices":[{"text":"Born Haber cycle is different from Hess's law","value":"A"},{"text":"The energy changes in a cyclic process is not zero","value":"B"},{"text":"The lattice energy of crystalline substances can be calculated easily","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252846,"question":"Enthalpy of formation of one mole of ionic compound form gaseous ion under standard condition is called","choices":[{"text":"Gibb's energy","value":"A"},{"text":"Gibb's energy","value":"B"},{"text":"Bond energy","value":"C"},{"text":"Lattice energy","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252845,"question":"According to Hess's law, the enthalpy change for a reaction","choices":[{"text":"Depends on path","value":"A"},{"text":"Independent of the path","value":"B"},{"text":"The sum of ∆E and ∆H","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252843,"question":"Decomposition of H2O is","choices":[{"text":"Endothermic reaction","value":"A"},{"text":"Nuclear reaction","value":"B"},{"text":"Exothermic reaction","value":"C"},{"text":"Zero nuclear reaction","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252842,"question":"The lattice energy of NaCl is","choices":[{"text":"787 j/ mole","value":"A"},{"text":"790 kj/mol","value":"B"},{"text":"780 kJ/ mol","value":"C"},{"text":"-787 kI / mole","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252841,"question":"The value of ∆V being very small. The term P∆V can be neglected for process involving","choices":[{"text":"Liquid and gas","value":"A"},{"text":"Solids and gases","value":"B"},{"text":"Liquid and solid","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252839,"question":"The enthalpy change for the reaction C2H2 + 5/2 O2 --------&gt; 2CO2 + H2O is known as enthalpy of","choices":[{"text":"Fomation of CO2","value":"A"},{"text":"Fusion ofC2H4","value":"B"},{"text":"Combustion of C2H4","value":"C"},{"text":"Vaporization of C2H2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252837,"question":"A state function which describes together the internal energy and product of pressure and volume is called","choices":[{"text":"Enthalpy","value":"A"},{"text":"internal energy","value":"B"},{"text":"Work","value":"C"},{"text":"Kinetic energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252836,"question":"The enthalpies of all elements in their standard states are","choices":[{"text":"Unity","value":"A"},{"text":"always +ve","value":"B"},{"text":"always -ve","value":"C"},{"text":"zero","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252835,"question":"Total heat content of a system is called","choices":[{"text":"Internal energy","value":"A"},{"text":"Entropy","value":"B"},{"text":"Enthalpy","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252833,"question":"The measurement of enthalpy change at standard conditions means that we should manage the measurement at","choices":[{"text":"24°C at 1 atm","value":"A"},{"text":"25°C at 1 atm","value":"B"},{"text":"0C° at 1 atm","value":"C"},{"text":"100C° 1 atm","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252832,"question":"Most of the reactions which give stable products are","choices":[{"text":"Endothermic","value":"A"},{"text":"Exothermic","value":"B"},{"text":"Isothermal","value":"C"},{"text":"Non of these","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252831,"question":"During an exothermic or endothermic reaction which one of the following formula is used to calculate the amount of heat evolved or absorbed","choices":[{"text":"ΔΗ = ΔΕ+PV","value":"A"},{"text":"∆E= q+w","value":"B"},{"text":"Δp =ΔΗ","value":"C"},{"text":"q = m x s x ∆T","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252830,"question":"The exothermic process is","choices":[{"text":"Evaporation","value":"A"},{"text":"Sublimation","value":"B"},{"text":"Respiration","value":"C"},{"text":"Boiling","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252829,"question":"The heat of reaction depends upon","choices":[{"text":"Temperature of the reactants","value":"A"},{"text":"Physical states of the reactants and the products","value":"B"},{"text":"Both A) and B)","value":"C"},{"text":"Path of the reaction and the temperature","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252828,"question":"One Joule is equivalent to","choices":[{"text":"4.184 cal.","value":"A"},{"text":"0.4184cal.","value":"B"},{"text":"1/2 cal.","value":"C"},{"text":"1/4.184 cal","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252827,"question":"If an endothermic reaction is allowed to take place very rapidly in air, the temperature of the surrounding air will","choices":[{"text":"Remains constant","value":"A"},{"text":"Increase","value":"B"},{"text":"Decrease","value":"C"},{"text":"Either increase or decrease","value":"D"},{"text":"One Joule is equivalent to","value":"E"}],"correctAnswer":3}]