CHEMICAL REACTION ENGINEERING QUIZ

A reaction in which one of the products of reaction acts as a catalyst is called a/an __________ reaction.

Catalytic

None of these

Photochemical

Autocatalytic

TRUE ANSWER : ?
YOUR ANSWER : ?

Oil is hydrogenated using nickel catalyst in a __________ reactor.

Batch

Fluidised bed

Slurry

Fixed bed

TRUE ANSWER : ?
YOUR ANSWER : ?

If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to

(E + ED)/2

ED/2

The intrinsic activation energy E

(E + ED) where ED is activation due to diffusion

TRUE ANSWER : ?
YOUR ANSWER : ?

A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

More than

Equal to

Equal to or more than

Less than

TRUE ANSWER : ?
YOUR ANSWER : ?

In an ideal mixed reactor (at steady state), the

Space time is equivalent to holding time for constant density systems

All of these

Exit stream has the same composition as the fluid within the reactor

Composition throughout the reactor remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the dispersion number for a plug flow reactor?

-1

1

?

TRUE ANSWER : ?
YOUR ANSWER : ?

The irreversible reaction, X → Y, is the special case of the reversible reaction, X ⇋ Y, in which the

Concentration of

Equilibrium constant is infinite

Fractional conversion of

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In an ideal tubular-flow reactor

There is no mixing in longitudinal direction

All of these

Mixing takes place in radial direction

There is a uniform velocity across the radius

TRUE ANSWER : ?
YOUR ANSWER : ?

An example of autothermal reactor operation is

Sulphur dioxide oxidation

Ammonia synthesis

Benzene oxidation

Ethylene oxidation

TRUE ANSWER : ?
YOUR ANSWER : ?

Rate of an autocatalytic chemical reaction is a function of

Pressure only

Composition only

Temperature only

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

↑