CHEMICAL REACTION ENGINEERING QUIZ

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

Temperature

Volume of the reactor

Initial concentration of N₂ and H₂

Total pressure of the system

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The reactions of high molecularity are rare, because

Many body collisions are not favoured energetically

Of requirement of very large concentration for such reactions

Of very large activation energy of many bodies

Of low probability of many body collisions

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Sulphuric acid is used as a catalyst in the

None of these

Gas phase oxidation of SO₂ in chamber process

Hydrogenation of oils

Alkylation of hydrocarbons

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The excess energy of the reactants required to dissociate into products is known as the __________ energy.

Binding

Threshold

Thermal

Activation

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A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

1

3

43833

32

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Helium-mercury method can be used to determine the __________ of the catalyst particle.

Porosity

Solid density

Pore volume

All of these

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The response curve for a step input signal from a reactor is called C-curve. The variance of C-curve in a 'tanks in series model' comprising of 'm' tanks is equal to

m

1/m

m²

√m

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In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

Irreversible endothermic

Irreversible exothermic

Reversible exothermic

Reversible endothermic

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A batch reactor is suitable for

Achieving cent percent conversion of reactants into products

Liquid phase reactions

Obtaining uniform polymerisation products in highly exothermic reactions

Large scale gaseous phase reactions

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Kinetics of a catalytic reaction can be best studied on a/an __________ reactor.

Differential (flow)

Integral (plug flow)

Mixed

Either A, B and C

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