Multiple Choice Questions on Chemical Reaction EngineeringThe Following Section consists of Multiple Choice Questions on Chemical Reaction Engineering.
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Chemical Reaction Engineering MCQ
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Question 1 of 20
1. Question
1 pointsWhich of the following will give maximum gas conversion ?
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Question 2 of 20
2. Question
1 points__________ explains the mechanism of catalysis.
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Question 3 of 20
3. Question
1 pointsFrom among the following, choose one which is not an exothermic process.
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Question 4 of 20
4. Question
1 pointsA catalyst
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Question 5 of 20
5. Question
1 pointsFor high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.
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Question 6 of 20
6. Question
1 pointsFor every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.
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Question 7 of 20
7. Question
1 pointsA first order reaction requires two equal sized CSTR. The conversion is
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Question 8 of 20
8. Question
1 pointsIn case of physical adsorption, the heat of adsorption is of the order of __________ kcal/kg.mole.
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Question 9 of 20
9. Question
1 pointsThe most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is
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Question 10 of 20
10. Question
1 pointsA reactor is generally termed as an autoclave, when it is a
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Question 11 of 20
11. Question
1 pointsThe rate constant of a chemical reaction decreases by decreasing the
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Question 12 of 20
12. Question
1 points__________ is the response curve for a step input signal from a reactor.
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Question 13 of 20
13. Question
1 pointsWhich of the following is the most suitable for very high pressure gas phase reaction ?
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Question 14 of 20
14. Question
1 pointsThe reaction between oxygen and organic material is a/an __________ reaction.
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Question 15 of 20
15. Question
1 pointsWith decrease in temperature, the equilibrium conversion of a reversible endother-mic reaction
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Question 16 of 20
16. Question
1 pointsIn an exothermic chemical reaction, the reactants compared to the products have
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Question 17 of 20
17. Question
1 pointsA reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length
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Question 18 of 20
18. Question
1 pointsThe rate constant of a chemical reaction increases by 100 times when the temperature is increased from 400 °K to 500 °K. Assuming transition state theory is valid, the value of E/R is
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Question 19 of 20
19. Question
1 pointsA batch reactor is suitable for
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Question 20 of 20
20. Question
1 pointsFor a heterogeneous catalytic reaction
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Chemical Reaction Engineering MCQ 2
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Question 1 of 20
1. Question
1 pointsThe increase in the rate of reaction with temperature is due to
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Question 2 of 20
2. Question
1 points‘N’ plug flow reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for __________ order reactions.
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Question 3 of 20
3. Question
1 pointsBET apparatus
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Question 4 of 20
4. Question
1 pointsRadioactive decay follows __________ order kinetics.
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Question 5 of 20
5. Question
1 pointsThe excess energy of reactants in a chemical reaction required to dissociate into products is termed as the __________ energy.
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Question 6 of 20
6. Question
1 pointsPick out the correct statement.
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Question 7 of 20
7. Question
1 pointsThe dimensions of rate constant for reaction 3A B are (l/gm mole)/min. Therefore the reaction order is
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Question 8 of 20
8. Question
1 pointsPick out the correct statement
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Question 9 of 20
9. Question
1 pointsIf the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is
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Question 10 of 20
10. Question
1 pointsPick out the wrong statement.
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Question 11 of 20
11. Question
1 pointsThe reason why a catalyst increases the rate of reaction is that, it
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Question 12 of 20
12. Question
1 pointsWhen the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is
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Question 13 of 20
13. Question
1 pointsAt a given value of E/R (ratio of activation energy and gas constant), the ratio of the rate constants at 500°K and 400°K is 2, if Arrhenious law is used. What will be this ratio, if transition state theory is used with the same value of E/R?
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Question 14 of 20
14. Question
1 points__________ is the controlling step in a highly temperature sensitive fluid-solid non-catalytic reaction.
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Question 15 of 20
15. Question
1 pointsAn autothermal reactor is
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Question 16 of 20
16. Question
1 pointsThe rate constant of a first order reaction depends on the
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Question 17 of 20
17. Question
1 pointsA reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
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Question 18 of 20
18. Question
1 pointsThe ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is
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Question 19 of 20
19. Question
1 pointsWhich of the following will favour the reverse reaction in a chemical equilibrium reaction ?
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Question 20 of 20
20. Question
1 pointsConversion increases with increase in temperature in case of a an __________ reaction.
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Chemical Reaction Engineering MCQ 3
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Question 1 of 20
1. Question
1 pointsA photochemical reaction is __________ light.
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Question 2 of 20
2. Question
1 pointsPick out the wrong statement.
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Question 3 of 20
3. Question
1 pointsIn a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.
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Question 4 of 20
4. Question
1 points‘Unreacted core model’ represents the reaction involving
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Question 5 of 20
5. Question
1 pointsIf a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.
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Question 6 of 20
6. Question
1 pointsThe units of frequency factor in Arhenious equation
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Question 7 of 20
7. Question
1 pointsWhich of the following is not a chemical step in a fluid solid catalytic reaction ?
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Question 8 of 20
8. Question
1 pointsIn case of __________ reactions, the reaction rate does not decrease appreciably as the reaction proceeds.
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Question 9 of 20
9. Question
1 pointsFor nearly isothermal operation involving large reaction time in a liquid-phase reaction, the most suitable reactor is a __________ reactor.
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Question 10 of 20
10. Question
1 pointsWhich of the following is an independent variable for a batch tank reactor with uniform concentration and temperature ?
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Question 11 of 20
11. Question
1 pointsIn a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will
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Question 12 of 20
12. Question
1 pointsThe equilibrium constant of a catalytic chemical reaction __________ due to the presence of a catalyst.
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Question 13 of 20
13. Question
1 pointsThe rate constant of a chemical reaction increases by increasing the
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Question 14 of 20
14. Question
1 pointsThe catalytic activity of enzymes is due to their capacity to lower the __________ energy.
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Question 15 of 20
15. Question
1 pointsPick out the correct statement.
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Question 16 of 20
16. Question
1 pointsA batch reactor is characterised by
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Question 17 of 20
17. Question
1 pointsWhen a catalyst increases the rate of forward reaction, the value of rate constant
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Question 18 of 20
18. Question
1 pointsRate determining step in a reaction consisting of a number of steps in series is the __________ step.
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Question 19 of 20
19. Question
1 pointsThe rate of a chemical reaction is almost doubled for every 10°C rise in temperature. The rate will increase __________ times, if the temperature rises form 10 to 100°C.
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Question 20 of 20
20. Question
1 pointsWhen all the limiting reactant is consumed in the reaction, the operational yield __________ the relative yield.
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Chemical Reaction Engineering MCQ 4
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Question 1 of 20
1. Question
1 pointsThe half life period of a first order reaction is
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Question 2 of 20
2. Question
1 pointsThe catalyst in a second order reversible reaction increases the rate of the forward reaction
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Question 3 of 20
3. Question
1 pointsCatalyst carriers
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Question 4 of 20
4. Question
1 pointsA reaction which is catalysed by a base is catalysed by all substances which have a tendency to
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Question 5 of 20
5. Question
1 pointsThe reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.
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Question 6 of 20
6. Question
1 pointsA typical example of an exothermic reversible reaction conducted at high pressure in industry is
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Question 7 of 20
7. Question
1 pointsStudy of chemical kinetics is the easiest in the case of __________ reactions.
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Question 8 of 20
8. Question
1 pointsIn autocatalytic reactions,
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Question 9 of 20
9. Question
1 pointsWhat is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?
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Question 10 of 20
10. Question
1 pointsPick out the wrong statement.
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Question 11 of 20
11. Question
1 pointsThe rate at which a chemical substance reacts is proportional to its
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Question 12 of 20
12. Question
1 pointsA plug-flow reactor is characterised by
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Question 13 of 20
13. Question
1 pointsFor a tubular reactor with space time ‘τ’ and residence time ‘θ’, the following statement holds good.
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Question 14 of 20
14. Question
1 pointsWhich of the following curves shows the effect of temperature on the extent of gas-solid adsorption at a given pressure ?
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Question 15 of 20
15. Question
1 pointsFor an ideal mixed flow reactor (CSTR), the exit age distribution E(t) is given by
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Question 16 of 20
16. Question
1 pointsFluid flow in a real packed bed can be approximated as __________ model.
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Question 17 of 20
17. Question
1 pointsA reaction which is catalysed by an acid is also catalysed by any substance, which has a tendency to
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Question 18 of 20
18. Question
1 pointsIf the rate of a chemical reaction becomes slower at a given temperature, then the
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Question 19 of 20
19. Question
1 pointsFor a zero order reaction, the concentration of product increases with the
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Question 20 of 20
20. Question
1 pointsPick out the wrong statement.
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