CHEMICAL REACTION ENGINEERING QUIZ

For a tubular flow reactor with uniform concentration and temperature, the independent variable is

Length

Time

None of these

Diameter

TRUE ANSWER : ?
YOUR ANSWER : ?

For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of

Bypass

Ideal plug flow

Chanelling

Dead zone

TRUE ANSWER : ?
YOUR ANSWER : ?

The sequence in which three CSTR's of volumes 5, 10 and 15 m³ will be connected in series to obtain the maximum production in a second order irreversible reaction is

5, 10, 15

15, 10, 5

10, 5, 15

10, 15, 5

TRUE ANSWER : ?
YOUR ANSWER : ?

Catalyst is a substance, which __________ chemical reaction.

Decreases the speed of a

Alters the value of equilibrium constant in a reversible

Can either increase or decrease the speed of a

Increases the speed of a

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YOUR ANSWER : ?

For a first order reaction carried out in a plug flow reactor, the space time is

1/K In C/C0

K In C/C0

1/K In C0/C

K In C0/C

TRUE ANSWER : ?
YOUR ANSWER : ?

A backmix reactor

Is same as ideal stirred tank reactor

Is same as plug-flow reactor

Is most suitable for gas phase reaction

Employs mixing in axial direction only

TRUE ANSWER : ?
YOUR ANSWER : ?

In an ideal P.F.R. at steady state conditions

The composition of reactants remains constant along a flow path

There is no lateral mixing of fluid

The conversion of the reactant varies from point to point along a flow path

There may be diffusion along the flow path

TRUE ANSWER : ?
YOUR ANSWER : ?

According to Arhenious equation of temperature dependency of rate constant for an elementary reaction

K ∝ √T

None of these

K ∝ T e-E/RT

K ∝ e-E/RT

TRUE ANSWER : ?
YOUR ANSWER : ?

The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

0.5

1

2

3

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YOUR ANSWER : ?

Fluid flow in a real packed bed can be approximated as __________ model.

Dispersion

Plug flow

Mixed flow

Tank in series

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YOUR ANSWER : ?