The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))

Chemical Reaction Engineering
The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m³ is fed to the reactor at the rate of 0.01 m³ /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k)is (Data: Heat of reaction at 298 K = - 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature))

500

1000

600

400

500

1000

600

400

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Chemical Reaction Engineering
In an ideal mixed reactor (at steady state), the

Space time is equivalent to holding time for constant density systems

All of these

Composition throughout the reactor remains same

Exit stream has the same composition as the fluid within the reactor

Space time is equivalent to holding time for constant density systems

All of these

Composition throughout the reactor remains same

Exit stream has the same composition as the fluid within the reactor

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Chemical Reaction Engineering
In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

More than

Data insufficient; can't be predicted

Same as

Less than

More than

Data insufficient; can't be predicted

Same as

Less than

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Chemical Reaction Engineering
Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

Very slow

Very fast

Photochemical

Both B and C

Very slow

Very fast

Photochemical

Both B and C

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Chemical Reaction Engineering
In a/an __________ vessel, the fluid enters and leaves following plug flow.

Closed

Open-closed

Close-opened

Open

Closed

Open-closed

Close-opened

Open

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Chemical Reaction Engineering
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by

keff = (k+ kg)/2

1/keff = 1/k + 1/kg

keff = k + kg

keff = (kkg)1/2

keff = (k+ kg)/2

1/keff = 1/k + 1/kg

keff = k + kg

keff = (kkg)1/2

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Chemical Reaction Engineering

Chemical Reaction Engineering In an ideal mixed reactor (at steady state), the

Chemical Reaction Engineering In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

Chemical Reaction Engineering Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

Chemical Reaction Engineering In a/an __________ vessel, the fluid enters and leaves following plug flow.

Chemical Reaction Engineering A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by

Chemical Reaction Engineering
In an ideal mixed reactor (at steady state), the

Chemical Reaction Engineering
In a first order reaction, the time required to reduce the concentration of reactant from 1 mole/litre to 0.5 mole/litre will be __________ that required to reduce it from 10 moles/litre to 5 moles/litre in the same volume.

Chemical Reaction Engineering
Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

Chemical Reaction Engineering
In a/an __________ vessel, the fluid enters and leaves following plug flow.

Chemical Reaction Engineering
A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (keff) is given by