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Chemical Reaction Engineering

Chemical Reaction Engineering
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

Equal to or more than
More than
Less than
Equal to

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Chemical Reaction Engineering
For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. If the volume of the reactor is suddenly reduced to l/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times.

16
8
43838
43846

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Chemical Reaction Engineering
Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum.

Increases
Remains unchanged
Decreases
Unpredictable from the data

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Chemical Reaction Engineering
For the liquid phase zero order irreversible reaction A → B, the conversion of A in a CSTR is found to be 0.3 at a space velocity of 0.1min⁻¹ . What will be the conversion for a PFR with a space velocity of 0.2 min⁻¹? Assume that all the other operating conditions are the same for CSTR and PFR.

0.9
0.3
0.6
0.15

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Chemical Reaction Engineering
From among the following, choose one which is not an exothermic process.

Catalytic cracking
Ammonia synthesis
Methanol synthesis
Oxidation of sulphur

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Chemical Reaction Engineering
The energy balance equation over a tubular reactor under transient conditions is

A linear partial differential equation
A non-linear partial differential equation
An algebric differential equation
An ordinary non-linear differential equation

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