Chemical Reaction Engineering MCQ Questions & Answers

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Each section contains 100 MCQs on Chemical Reaction Engineering .

The irreversible reaction is a special case of reversible reaction, if the

A) Equilibrium constant is 1 B) Conversion of the reactant at equilibrium condition is zero C) Reactant concentration at equilibrium condition is zero D) All of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Effectiveness factor of a catalyst pellet is a measure of the __________ resistance.

A) Pore diffusion B) Gas film C) Chemical reaction D) None of these

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

A) More than B) Less than C) Same as D) Data insufficient; can't be predicted

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield?

A) Large reactor followed by smaller one B) Smaller reactor followed by larger one C) Either of the arrangement A or B will give the same yield D) Data insufficient, can't be predicted

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

A) τ and θ are always equal B) τ = θ , when the fluid density changes in the reactor C) τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant D) τ = θ , for a non-isothermal reactor

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

With the same reaction time, initial concentration and feed rate, the reaction 2A → B is carried out separately in CSTR and P.F. reactor of equal volumes. The conversion will be

A) Higher in P.F. reactor B) Higher in CSTR C) Same in both the reactors D) Data insufficient; can't be predicted

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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

A) 0.5 B) 1 C) 2 D) 3

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The rate constant of a chemical reaction decreases by decreasing the

A) Pressure B) Concentration of reactants C) Temperature D) Duration of reaction

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Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Calcination reaction of limestone (CaCO₃ → CaO + CO₂) goes to completion in the rotary kiln, because

A) CaO is not dissociated B) CO₂ escapes continuously C) Of high calcination temperature D) CaO is more stable than CaCO₃

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

A) 8 B) 12 C) 16 D) 32

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Chemical Reaction Engineering MCQ Questions & Answers | Chemical Engineering