[{"id":1066322,"question":"Which statement is true at dynamic equilibrium.","choices":[{"text":"No reactio is occurring","value":"A"},{"text":"Concentrations are changing","value":"B"},{"text":"Rates of forward and reverse reactions are equal","value":"C"},{"text":"Rate forward reaction < reverse","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066321,"question":"Dynamic equilirbrium is attained when","choices":[{"text":"Forward reaction stops","value":"A"},{"text":"Reverse reaction stops","value":"B"},{"text":"Forward and reverse reactions continue at equal rates","value":"C"},{"text":"Concentration of products become zero","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066320,"question":"Combustion of methane is.","choices":[{"text":"Reversible ","value":"A"},{"text":"Endothermic","value":"B"},{"text":"Irreversible","value":"C"},{"text":"Equilibrium process","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066319,"question":"In a reversible reaction.","choices":[{"text":"Products do not reform reactants","value":"A"},{"text":"Rate of forward reaction is always higher","value":"B"},{"text":"Both forward and reverse reactions occur","value":"C"},{"text":"Products are in excess","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066318,"question":"Whcih of the following reactions reaches equilibrium","choices":[{"text":"Reversible","value":"A"},{"text":"Irreversible","value":"B"},{"text":"Combustion","value":"C"},{"text":"Neutralization","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066317,"question":"Which of the following is an irreversible reaction.","choices":[{"text":"Haber process","value":"A"},{"text":"Precipitation of Ag Cl","value":"B"},{"text":"Synthesis of ammonia","value":"C"},{"text":"Esterification","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066316,"question":"A reversibel reaction is one which ","choices":[{"text":"Proceeds to completion","value":"A"},{"text":"Occurs only in one direction ","value":"B"},{"text":"Proceeds in both directions","value":"C"},{"text":"Has no products","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066315,"question":"The reversibel reation cannot be achieved in","choices":[{"text":"Open system","value":"A"},{"text":"Closed system","value":"B"},{"text":"Both a and b","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1066314,"question":"Which one of the following is not an example of reversible reaction.","choices":[{"text":"Formation of ammonia","value":"A"},{"text":"Foramtion ow water","value":"B"},{"text":"Decomposition of PCl5","value":"C"},{"text":"Decomposition of NO2","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066313,"question":"For a specific reaction the valu eof the equilibrium constant, Kc?","choices":[{"text":"Always remains the same at differrent reaction conditions","value":"A"},{"text":"Increases if the concentration of one ofthe product is increased","value":"B"},{"text":"Changes with changes in the temperature","value":"C"},{"text":"Increasees if the concentration of one of the ratants is increased","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066312,"question":"Consider the equilibrium 2H2 +O2................ 2H2O. If the concentration of H2O is increased, the concentrations of H2 and O2 will","choices":[{"text":"Increses","value":"A"},{"text":"Decrease","value":"B"},{"text":"Remain the same","value":"C"},{"text":"Change irregularly","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066311,"question":"Kc = 0.040 at 450 oC for the teh given reaction, evaluate Kp for the reaction.<br />\r\nPcl5        ......................... PCl2 + Cl2","choices":[{"text":"0.40","value":"A"},{"text":"2.4","value":"B"},{"text":"0.64","value":"C"},{"text":"0.052","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1066310,"question":"Consider the gas phase equilibrium sysem represented by teh equation 2 H2O................ 2H2+O2 Givent that the forward reactio is endothermic, which of the following chagnes will decrease the equilibrium amount of H2O.","choices":[{"text":"Adding more oxygen","value":"A"},{"text":"Adding a solid phase catalyst","value":"B"},{"text":"Decreasing the volume of the container ","value":"C"},{"text":"Increaseing the temperature at constant pressure","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":1066309,"question":"Which of the following statemetns correctly describes the effect of temperature on the equilirium constant.","choices":[{"text":"Kc is directly proportional to temperature","value":"A"},{"text":"Kc is inversely proportional to temperature.","value":"B"},{"text":"Kc depends on the enthalpy change of the reaction","value":"C"},{"text":"Temperature has no effect on the value of Kc","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066308,"question":"A saturted solution represents a dynamic equilibrium Macroscopically, the concentration of dissolved solute is constant, Microscopically this occurs because.","choices":[{"text":"No more solute particles are dissolving","value":"A"},{"text":"The rate of dissolution of solute is zero","value":"B"},{"text":"Solute particles are dissolving and precipitating at the same rate","value":"C"},{"text":"All solute particles have dissolved","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066307,"question":"Delta G tells about","choices":[{"text":"Speed","value":"A"},{"text":"Mechanism","value":"B"},{"text":"Feasibility","value":"C"},{"text":"All of these","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1066306,"question":"At equilibrium Delta G is","choices":[{"text":"Zero","value":"A"},{"text":"Positive","value":"B"},{"text":"Negative","value":"C"},{"text":"Maximum","value":"D"},{"value":"E"}],"correctAnswer":1}]