Chemical Reaction Engineering - Study Mode

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[#221] Which of the following is not endothermic in nature?

(A) Combustion of sulphur

(B) Gasification of carbon

(C) Thermal cracking of fuel oil

(D) Steam reforming of naphtha

Correct Answer

(A) Combustion of sulphur

[#222] For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

(A) Film diffusion

(B) Diffusion through ash layer

(C) Chemical reaction

(D) Either A, B or C

Correct Answer

(C) Chemical reaction

[#223] For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.

(A) Film diffusion

(B) Diffusion through ash layer

(C) Chemical reaction

(D) Either A, B or C

Correct Answer

(B) Diffusion through ash layer

[#224] According to the 'law of mass action', the rate of reaction is directly proportional to the

(A) Equilibrium constant

(B) Volume of the reaction vessel

(C) Nature of the reactants

(D) Molar concentration of the reactants

Correct Answer

(D) Molar concentration of the reactants

[#225] What is the dispersion number for a CSTR?

(A) 0

(B) 1

(C) < 1

(D) ∞

Correct Answer

(D) ∞