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Chemical Reaction Engineering

Chemical Reaction Engineering
If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible.

∞
> 0.5
< 0.5
0

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Chemical Reaction Engineering
A high space velocity means that a given

Reaction can be accomplished with small reactor
Conversion can be obtained with a high feed rate
Both A and B
None of these

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Chemical Reaction Engineering
Rate of a chemical reaction is not influenced by the

Temperature
Number of molecules of reactants taking part in a reaction
Catalyst
Reactants concentration

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Chemical Reaction Engineering
The role of a catalyst in a chemical reaction is to change the

Activation energy
Equilibrium constant
Heat of reaction
Final products

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Chemical Reaction Engineering
A batch adiabatic reactor at an initial temperature of 373°K is being used for the reaction, A → B. Assume the heat of reaction is - 1kJ/mole at 373°K and heat capacity of both A and B to be constant and equal to 50J/mole.K. The temperature rise after a conversion of 0.5 will be

5°C
100°C
20°C
10°C

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Chemical Reaction Engineering
The equilibrium constant of chemical reaction __________ in the presence of catalyst.

Can either increase or decrease (depends on the type of catalyst)
Remains unaffected
Increases
Decreases

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