CHEMICAL REACTION ENGINEERING QUIZ

Which of the following will give maximum gas conversion?

Fluidised bed reactor

Fixed bed reactor

Plug-flow catalytic reactor

Semi-fluidised bed reactor

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of __________ reactions, the reaction rate does not decrease appreciably as the reaction proceeds.

Series

Catalytic

Parallel

Auto catalytic

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YOUR ANSWER : ?

The role of a catalyst in a chemical reaction is to change the

Final products

Activation energy

Heat of reaction

Equilibrium constant

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Photochemical reaction rate does not depend significantly on temperature, because

The energy of reacting molecules exceeds the activation energy by absorption of light

None of these

It is an exothermic reaction

It is a reversible reaction

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YOUR ANSWER : ?

In a continuous flow stirred tank reactor, the composition of the exit stream

None of these

Is different than that in the reactor

Is same as that in the reactor

Depends upon the flow rate of inlet stream

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The experimentally determined overall order of the reaction, A + B → C + D, is two. Then the

Reaction is elementary but the molecularity may not be 2

Reaction is elementary with a molecularity of 2

Molecularity of the reaction is 2, but the reaction may not be elementary

Reaction may be elementary with molecularity of 2

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YOUR ANSWER : ?

What is the unit of the rate constant in a chemical reaction in which 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on?

Litre/mole.second

Moles/litre.second

Litre/second

Litre/mole

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YOUR ANSWER : ?

Threshold energy in a reaction is equal to the

Neither A nor B

Sum of A & B

Activation energy

Normal energy of reactants

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Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor?

None of these

Very low temperature should be used throughout the reaction

Temperature should be high in the beginning and decreased towards the end of the reaction

Very high temperature should be used throughout the reaction

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For reactions in parallel viz A → P (desired product) and A → Q (unwanted product), if the order of the desired reaction is higher than that of the undesired reaction, a

Tubular reactor is preferred over a single CSTR for high yield

Both A and B

Batch reactor is preferred over a single CSTR for high yield

Single CSTR is the most suitable

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