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Chemical Reaction Engineering

Chemical Reaction Engineering
The vessel dispersion number (D/μL) for plug flow is

750
∞
500

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Chemical Reaction Engineering
The effectiveness factor for large value of Thiele modulus (L√(K/D1)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm²/second)

∞
L√(K/D1)
1/(L√(K/D1))
1

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Chemical Reaction Engineering
The rate constant of a chemical reaction decreases by decreasing the

Temperature
Duration of reaction
Pressure
Concentration of reactants

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Chemical Reaction Engineering
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

2
3
0
1

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Chemical Reaction Engineering
The eddy diffusivity for a liquid in plug flow must be

∞
1
0
Between 0 and 1

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Chemical Reaction Engineering
The catalyst in a second order reversible reaction increases the rate of the forward reaction

And decreases that of backward reaction
And backward reaction equally
Only
To a greater extent than that of the backward reaction

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MORE MCQ ON Chemical Reaction Engineering

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