CHEMICAL REACTION ENGINEERING QUIZ

Find a mechanism that is consistent with the rate equation and reaction given below: 2A + B → A₂B, ( - rA) = k.CA.CB

A + B ⇋ AB;AB + A → A₂B

A + A ⇋ AA;AA + B → A₂B

A + B ⇋ AB ; AB + A → A₂B

TRUE ANSWER : ?
YOUR ANSWER : ?

A reactor is generally termed as an autoclave, when it is a

Atmospheric pressure tank reactor

High pressure tubular reactor

Atmospheric pressure CSTR

High pressure batch reactor

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YOUR ANSWER : ?

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

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

There is no lateral mixing of fluid

The composition of reactants remains constant along a flow path

There may be diffusion along the flow path

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YOUR ANSWER : ?

A pulse tracer is introduced in an ideal CSTR (with a mean residence time ι) at time, t = 0. The time taken for the exit concentration of the tracer to reach half of its initial value will be

2τ

τ/0.693

0.693τ

0.5τ

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YOUR ANSWER : ?

Variables affecting the rate of homogeneous reactions are

Pressure and composition only

Pressure, temperature and composition

Pressure and temperature only

Temperature and composition only

TRUE ANSWER : ?
YOUR ANSWER : ?

In the gaseous phase ammonia formation reaction (N₂ + 3H₂ ⇋ 2NH₃), the value of the equilibrium constant depends on the

Temperature

Total pressure of the system

Initial concentration of N₂ and H₂

Volume of the reactor

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YOUR ANSWER : ?

Which of the following is not endothermic in nature?

Thermal cracking of fuel oil

Gasification of carbon

Steam reforming of naphtha

Combustion of sulphur

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YOUR ANSWER : ?

The percent conversion of ethanol in the reactor is

100

95

2.5

97.5

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YOUR ANSWER : ?

The reactions with low activation energy are

Fast

Always spantaneous

Slow

Non-spontaneous

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YOUR ANSWER : ?

In Langmuir treatment of adsorption,

Extent of adsorption is more than one complete monomolecular layer on the surface

Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site

All the adsorption does not take place by the same mechanism

Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule

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