CHEMICAL REACTION ENGINEERING QUIZ

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

0.5

3

2

1

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following fixes the volume of a batch reactor for a particular conversion and production rate?

Rate constant

Density of mixture

Operating conditions (e.g. pressure and temperature)

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

Pore diffusion

Chemical reaction

Film diffusion

Ash layer diffusion

TRUE ANSWER : ?
YOUR ANSWER : ?

A space velocity of 5 hr⁻¹ means that

After every 5 hours, reactor is being filled with the feed

Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour

Cent per cent conversion can be achieved in at least 5 hours

A fixed conversion of a given batch of feed takes 5 hours

TRUE ANSWER : ?
YOUR ANSWER : ?

The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.

Equal to

More than

Less than

Either B or C

TRUE ANSWER : ?
YOUR ANSWER : ?

Carrier in a catalyst increases its

Surface area

Performance

Activity

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The reactions of high molecularity are rare, because

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Many body collisions are not favoured energetically

Of low probability of many body collisions

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

10, 15, 5

5, 10, 15

10, 5, 15

15, 10, 5

TRUE ANSWER : ?
YOUR ANSWER : ?

Sum of the powers of the concentration terms in the rate equation is called the __________ of the reaction.

Molecularity

None of these

Order

Overall order

TRUE ANSWER : ?
YOUR ANSWER : ?

The optimum performance for reactors operating in parallel is obtained when the feed stream is distributed in such a way, that the

Space time for each parallel line is same

Space time for parallel lines is different

Larger reactors have more space time compared to smaller ones

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?