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
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.

Same as

Data insufficient; can't be predicted

More than

Less than

Same as

Data insufficient; can't be predicted

More than

Less than

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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

∞

> 0.5

< 0.5

0

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Chemical Reaction Engineering
For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Diffusion through ash layer

Film diffusion

Chemical reaction

Either A, B or C

Diffusion through ash layer

Film diffusion

Chemical reaction

Either A, B or C

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Chemical Reaction Engineering
When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is

< 1

> 1

1

< 1

> 1

1

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Chemical Reaction Engineering
If 'n' is the order of reaction, then unit of rate constant is

None of these

(time)n - 1 (concentration)

1/(time)(concentration)n - 1

(time)-1 (concentration)n - 1

None of these

(time)n - 1 (concentration)

1/(time)(concentration)n - 1

(time)-1 (concentration)n - 1

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Chemical Reaction Engineering
The rate expression for a heterogenous catalytic reaction is given by, - rA = K.KA PA(1 + KA.PA + Kr.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)

E + ΔHA

E + ΔHA - ΔHR

E

ΔHA + ΔHR

E + ΔHA

E + ΔHA - ΔHR

E

ΔHA + ΔHR

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Chemical Reaction Engineering

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

Chemical Reaction Engineering For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Chemical Reaction Engineering When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is

Chemical Reaction Engineering If 'n' is the order of reaction, then unit of rate constant is

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

Chemical Reaction Engineering
For the non catalytic reaction of particles with surrounding fluid, the same needed to achive the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the __________ is the controlling resistance.

Chemical Reaction Engineering
When the density of the reaction mixture is constant in a chemical reaction, the ratio of the mean residence time to space time is

Chemical Reaction Engineering
If 'n' is the order of reaction, then unit of rate constant is