[{"id":252826,"question":"What is not correct about ∆HF","choices":[{"text":"It is always negative","value":"A"},{"text":"Ìts value gives an idea about the relative stability of reactants and the products.","value":"B"},{"text":"Its value can be greater or less than zero","value":"C"},{"text":"Value depends upon nature of bonds","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252825,"question":"What is correct about heat of combustion","choices":[{"text":"It is applicable to gaseous substances only","value":"A"},{"text":"It is always negative","value":"B"},{"text":"It is always positive","value":"C"},{"text":"It is positive in some cases while negative in other","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252824,"question":"The enthalpy of formation of a compound is","choices":[{"text":"Positive","value":"A"},{"text":"Either positive or negative","value":"B"},{"text":"Negative","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252823,"question":"The values of ∆H for the process l(g)+e-1---------&gt;<br>I-1(g) is:","choices":[{"text":"&gt;0","value":"A"},{"text":"&lt;0","value":"B"},{"text":"0","value":"C"},{"text":"None","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252822,"question":"Calorie is equivalent to","choices":[{"text":"0.4184J","value":"A"},{"text":"4.184J","value":"B"},{"text":"418.4J","value":"C"},{"text":"40.18J","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252821,"question":"If a reaction involves only solids and liquids, which of the following is true?","choices":[{"text":"ΔH = ΔE","value":"A"},{"text":"ΔΗ =ΔΕ","value":"B"},{"text":"ΔH&gt;ΔΕ","value":"C"},{"text":"AH =AE +nRT","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252820,"question":"NaOH+HCI- NaCI+ H2O. Enthalpy change in the above reaction is called","choices":[{"text":"Enthalpy of reaction","value":"A"},{"text":"Enthalpy of Neutralisation","value":"B"},{"text":"Enthalpy of formation","value":"C"},{"text":"Enthalpy of combustion","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252819,"question":"Hess's law is analogous to","choices":[{"text":"Law of heat summation","value":"A"},{"text":"law of increasing entropy","value":"B"},{"text":"Law of heat exchange","value":"C"},{"text":"Ist law of thermodynamics","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252818,"question":"The net heat change in a chemical reaction is the same whether it is brought about in two or more different ways in one or several steps.it is known as","choices":[{"text":"Henry's law","value":"A"},{"text":"Hess's law","value":"B"},{"text":"joule's law","value":"C"},{"text":"Law of conservation of energy","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252817,"question":"Which of the following has positive value of enthalpy","choices":[{"text":"Neutralisation","value":"A"},{"text":"Atomization","value":"B"},{"text":"combustion","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252816,"question":"For an endothermic reaction, enthalpy of reactants","choices":[{"text":"Is smaller than that of the products","value":"A"},{"text":"Is greater than that of the products","value":"B"},{"text":"Must be greater or smaller than that of the products","value":"C"},{"text":"Is equal to that of the products","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252815,"question":"Enthalpy of neutralization of strong acids and strong bases have same values because","choices":[{"text":"Neutralization leads to the formation of salt and water","value":"A"},{"text":"Acids always give rise to H+ and bases always furnish OH-","value":"B"},{"text":"Strong acids and bases are ionic substances","value":"C"},{"text":"The net change involves the combination of H and OH ions to form water","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252813,"question":"If the energy of the activated complex lies close to energy of reactants, it means that reaction is","choices":[{"text":"Slow","value":"A"},{"text":"Exothermic","value":"B"},{"text":"Endothermic","value":"C"},{"text":"Exothermic and fast","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252812,"question":"By increasing the concentration of reactants, the rate of reaction","choices":[{"text":"Decreases","value":"A"},{"text":"Increases","value":"B"},{"text":"Remains constant","value":"C"},{"text":"Not predicted","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252810,"question":"The increase in reaction rate as a result of increase in temperature from 10K to 90K is","choices":[{"text":"512","value":"A"},{"text":"256","value":"B"},{"text":"400","value":"C"},{"text":"112","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252809,"question":"For a chemical reaction to occur","choices":[{"text":"The vessel shall be open","value":"A"},{"text":"Reacting molecules should have less energy than Ea at time of collision","value":"B"},{"text":"Reacting molecules must be properly oriented and energy more than or equal to Ea","value":"C"},{"text":"The reacting molecules must not collide with each other","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252808,"question":"Which of the following reactions are usually slow?","choices":[{"text":"Neutralization of acids and bases","value":"A"},{"text":"Displacement Reactions","value":"B"},{"text":"Organic substitution reaction","value":"C"},{"text":"Free radical reactions","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252806,"question":"Rate of which reaction increases with temperature?","choices":[{"text":"Exothermic and endothermic reactions","value":"A"},{"text":"Endothermic reactions","value":"B"},{"text":"Exothermic reactions","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252805,"question":"In which of the following techniques rate of reaction is directly related with number ofions","choices":[{"text":"Spectrometry","value":"A"},{"text":"Dilatometric method","value":"B"},{"text":"Conductometric method","value":"C"},{"text":"Refractometric method","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252804,"question":"For a chemical reaction which can never be a fractional no","choices":[{"text":"order","value":"A"},{"text":"molecularity","value":"B"},{"text":"half-life","value":"C"},{"text":"rate constant","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252802,"question":"If the rate of the reaction is equal to the rate constant, the order of the reaction is","choices":[{"text":"3","value":"A"},{"text":"1","value":"B"},{"text":"0","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252801,"question":"If the reaction \"P+Q→R+S' is deseribed as being of zero order with respect to P, it means that","choices":[{"text":"P is catalyst in this reaction","value":"A"},{"text":"P molecules do not possess sufficient energy to react","value":"B"},{"text":"The concentration of P does not change during the reaction","value":"C"},{"text":"The rate of reaction is independent of the concentration of P","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252799,"question":"For reaction of methane and chlorine light is not available then","choices":[{"text":"Reaction will take place rapidly","value":"A"},{"text":"No Reaction take place","value":"B"},{"text":"Reaction occurs at double the rate","value":"C"},{"text":"May all cases occur","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252798,"question":"Which of the following statement about the order of reaction is true?","choices":[{"text":"The order of reaction can only be determined by experiment","value":"A"},{"text":"a second order reaction is also bimolecular","value":"B"},{"text":"The order of reaction is always non-zero","value":"C"},{"text":"The order of reaction increases with increasing temperature","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252797,"question":"The reaction takes place among the molecules when they have:","choices":[{"text":"Activation energy","value":"A"},{"text":"Properly oriented","value":"B"},{"text":"Concentrated","value":"C"},{"text":"Activation energy and proper orientation","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252795,"question":"Half-lives required to convert 100% reactant to produet for a first order reaction are","choices":[{"text":"10","value":"A"},{"text":"1000","value":"B"},{"text":"100","value":"C"},{"text":"Infinity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252793,"question":"Doubling the pressure in a liquid phase reaction","choices":[{"text":"Will double the rex","value":"A"},{"text":"Will increase the rex","value":"B"},{"text":"Will decrease the rex","value":"C"},{"text":"Will not alter the concentration of reactant","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252791,"question":"When the concentration of reactants is taken as unity the rate of reaction is equal to","choices":[{"text":"average rate","value":"A"},{"text":"concentratian of reactant","value":"B"},{"text":"instantaneous rate","value":"C"},{"text":"specific rate constant","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252789,"question":"Higher the surface area available for reaction","choices":[{"text":"slower the reaction","value":"A"},{"text":"faster the reaction","value":"B"},{"text":"constant the reaction","value":"C"},{"text":"lower the Ea","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252787,"question":"Amount of product formed increases with time, this statement is true for reactions-------with kinetics","choices":[{"text":"1s order","value":"A"},{"text":"3rd order","value":"B"},{"text":"zero order","value":"C"},{"text":"Any order","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252786,"question":"All the Hydrolytic reactions are","choices":[{"text":"First order","value":"A"},{"text":"Second order","value":"B"},{"text":"Third order","value":"C"},{"text":"pseudo-first order","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252785,"question":"The radioactive disintegration of 238U92 is","choices":[{"text":"First order","value":"A"},{"text":"Second order","value":"B"},{"text":"Third order","value":"C"},{"text":"Zero order","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252783,"question":"The collision which results in chemical reaction","choices":[{"text":"Effective collision","value":"A"},{"text":"Ineffective collision","value":"B"},{"text":"Useless collision","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252779,"question":"Substance which is formed as well as consumed during a chemical reaction and have temporary existence.","choices":[{"text":"Reactant","value":"A"},{"text":"product","value":"B"},{"text":"Catalyst","value":"C"},{"text":"Intermediate","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252778,"question":"The study of which one of the followings guides to the mechanism of the reaction","choices":[{"text":"Order of reaction","value":"A"},{"text":"Rate of reaction","value":"B"},{"text":"Half-life period of reaction","value":"C"},{"text":"Rate determining step","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":252777,"question":"For a chemical reaction in which one of the reactant also act as solvent, the order will be","choices":[{"text":"First order","value":"A"},{"text":"Third order","value":"B"},{"text":"Second order","value":"C"},{"text":"pseudo-first order","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252775,"question":"A reaction A- B is independent of concentration of reactant A. The order of reaction will be","choices":[{"text":"First order","value":"A"},{"text":"Second order","value":"B"},{"text":"Third order","value":"C"},{"text":"Zero order","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252774,"question":"When does average rate become equal to instantaneous rate of reaction","choices":[{"text":"At the start of reaction","value":"A"},{"text":"time interval is zero","value":"B"},{"text":"at the end of reactior","value":"C"},{"text":"time interval approaches zero","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252772,"question":"The slope of the graph is steepest at the beginning of reaction showing","choices":[{"text":"Rapid decrease in concentration of reactants","value":"A"},{"text":"Rapid increase in concentration of reactants","value":"B"},{"text":"Fast rate of reaction","value":"C"},{"text":"All of the above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252771,"question":"Which property of liquid is measured by polarimeter","choices":[{"text":"Conductance","value":"A"},{"text":"Optical activity","value":"B"},{"text":"Refractiye Indéx","value":"C"},{"text":"Change in volume","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252769,"question":"Unit of the rate constant depends upon the","choices":[{"text":"Molecularity of reaction","value":"A"},{"text":"Order of reaction","value":"B"},{"text":"Concentration terms","value":"C"},{"text":"Number of reactants","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252767,"question":"The number of atoms or molecules whose concentrations determines the rate of a chemical reaction is called the","choices":[{"text":"Molecularity of the reaction","value":"A"},{"text":"specific activity of the reaction","value":"B"},{"text":"Order of the reaction","value":"C"},{"text":"rate constant of the reaction","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252766,"question":"In the reaction A+B→ Products, if B is taken in excess, then it is an example of","choices":[{"text":"Second order reaction","value":"A"},{"text":"zero order reaction","value":"B"},{"text":"Pseudo first order reaction","value":"C"},{"text":"first order reaction","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252764,"question":"The rate of reaction between A and B increases by a factor of 100, when the concentration of A is increased 10 folds, the order of reaction with respect to A is","choices":[{"text":"10","value":"A"},{"text":"1","value":"B"},{"text":"4","value":"C"},{"text":"2","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252760,"question":"The conversion of molecules of A to B follows a second order kineties. Doubling the concentration of A will inerease the rate of formation of B by a factor of","choices":[{"text":"2","value":"A"},{"text":"4","value":"B"},{"text":"1/2","value":"C"},{"text":"1/4","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252759,"question":"If reactants are conductor of electricity, then method is used to measure the change in concentration of reaction","choices":[{"text":"Optical rotation","value":"A"},{"text":"Refractrometric","value":"B"},{"text":"Dilatometric","value":"C"},{"text":"Electrical conductivity","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252758,"question":"In dilatometric method is directly proportional to extent of reaction","choices":[{"text":"Change in concentration","value":"A"},{"text":"Change in pressure","value":"B"},{"text":"Chang in volume","value":"C"},{"text":"Change in temperature","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252756,"question":"Spectrometry method is applicable if a reactant or a product absorbs radiation","choices":[{"text":"Ultraviolet","value":"A"},{"text":"Visible","value":"B"},{"text":"Infrared","value":"C"},{"text":"Any of these","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252755,"question":"The order of reaction provides valuable information about of reaction","choices":[{"text":"Condition","value":"A"},{"text":"Concentration","value":"B"},{"text":"Mechanism","value":"C"},{"text":"Parameters","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252754,"question":"The reaction which is zero order","choices":[{"text":"Decomposition ofN2O5","value":"A"},{"text":"Formation of Glucose in plant","value":"B"},{"text":"Formation of Fel2","value":"C"},{"text":"Chorination of methane in sunlight","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252753,"question":"The number of reacting molecules whose concentration change during reaction is called","choices":[{"text":"Activated molecule","value":"A"},{"text":"Rate of reaction","value":"B"},{"text":"Order of reaction","value":"C"},{"text":"half-life","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252751,"question":"The rate of reaction for a reaction is 30 mol dm-3sec-1 if the product of concentration of 10.reactant is unity the specific rate constant is","choices":[{"text":"25","value":"A"},{"text":"2.5","value":"B"},{"text":"30","value":"C"},{"text":"15","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252749,"question":"When the concentration of product is increased the instantaneous rate of reaction with reference to reactants will be","choices":[{"text":"Positive","value":"A"},{"text":"Negative","value":"B"},{"text":"the same","value":"C"},{"text":"falling curve","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":252747,"question":"The concentration of product is increasing from 30 mole/dm3 to 40mol/dm3 in 0.5 sec then rate of reaction will be------moledm-3sec-1","choices":[{"text":"0","value":"A"},{"text":"20","value":"B"},{"text":"15","value":"C"},{"text":"25","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252746,"question":"Consider gas is measure in bars then the units of rate of reaction is","choices":[{"text":"Mole dm-3 sec","value":"A"},{"text":"Bars sec","value":"B"},{"text":"Mole dm-3 sec-1","value":"C"},{"text":"Bars sec-1","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252744,"question":"The reaction kinetics concerned with the","choices":[{"text":"Rate of reaction","value":"A"},{"text":"Direction of reaction","value":"B"},{"text":"Factor effecting rate of reaction","value":"C"},{"text":"both a &amp;b","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":252743,"question":"Reaction kinetics is important to discover the---under which reaction will proceed most economically:","choices":[{"text":"rate constant","value":"A"},{"text":"Conditions","value":"B"},{"text":"volume","value":"C"},{"text":"equilibrium point","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252741,"question":"Rusting of iron is the example of","choices":[{"text":"Fast","value":"A"},{"text":"Slow","value":"B"},{"text":"moderate","value":"C"},{"text":"depends upon conditions","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252731,"question":"lonization of KCIO3. is suppressed by","choices":[{"text":"Increasing temperatuse","value":"A"},{"text":"adding KCl","value":"B"},{"text":"adding NaNO3","value":"C"},{"text":"Decreasing temperature","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":252730,"question":"The value of Kc for H2O at 25C° is","choices":[{"text":"1x10 (-14)mole dm-3","value":"A"},{"text":"14 mol dm-3","value":"B"},{"text":"1.86×10(-16) mol dm-3","value":"C"},{"text":"1.0x10 (-7)moldm-3","value":"D"},{"value":"E"}],"correctAnswer":3}]