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Chemical Reaction Engineering

Chemical Reaction Engineering
The residence time distribution of an ideal CSTR is

Exp(-t/τ)
Τ exp (-t/τ)
1/τ exp (-t/τ)
1/τ (-t/τ)

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Chemical Reaction Engineering
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.

32
8
12
16

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Chemical Reaction Engineering
'Unreacted core model' represents the reaction involving

Combustion of coal particles
Roasting of sulphide ores
Manufacture of carbon disulphide from elements
None of these

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Chemical Reaction Engineering
For a tubular flow reactor with uniform concentration and temperature, the independent variable is

None of these
Time
Length
Diameter

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Chemical Reaction Engineering
The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are

Mostly irreversible
Insensitive to temperature changes
Highly temperature sensitive
Always irreversible

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Chemical Reaction Engineering
Enzymes are destroyed, when the

Reactant's concentration is very low
Reactant's concentration is very high
Reaction rate is independent of the reactant's concentration
Temperature is very high

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