A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1m³ /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of

Chemical Reaction Engineering
A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1m³ /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of

7

3

44015

6

7

3

44015

6

ANSWER DOWNLOAD EXAMIANS APP

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

∞

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Surface reaction between absorbed A and B in the gas phase

Surface reaction between absorbed A and absorbed B

Surface reaction between A in the gas phase and absorbed B

Absorption of A

Surface reaction between absorbed A and B in the gas phase

Surface reaction between absorbed A and absorbed B

Surface reaction between A in the gas phase and absorbed B

Absorption of A

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Which of the following will give maximum gas conversion?

Semi-fluidised bed reactor

Plug-flow catalytic reactor

Fixed bed reactor

Fluidised bed reactor

Semi-fluidised bed reactor

Plug-flow catalytic reactor

Fixed bed reactor

Fluidised bed reactor

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Which of the following does not produce a change in the value of rate constant of a reaction?

None of these

Pressure

Concentration and catalyst

Temperature

None of these

Pressure

Concentration and catalyst

Temperature

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering
Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot?

Ln CA0 Vs t1/2

CA0 Vs t1/2

CA0 Vs ln t1/2

Ln CA0 Vs ln t1/2

Ln CA0 Vs t1/2

CA0 Vs t1/2

CA0 Vs ln t1/2

Ln CA0 Vs ln t1/2

ANSWER DOWNLOAD EXAMIANS APP

Chemical Reaction Engineering

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

Chemical Reaction Engineering The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering Which of the following will give maximum gas conversion?

Chemical Reaction Engineering Which of the following does not produce a change in the value of rate constant of a reaction?

Chemical Reaction Engineering Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot?

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

Chemical Reaction Engineering
The rate of the heterogenous catalytic reaction A(g) + B(g) ? C(g) is given by -rA = k.KA.pA.PB/(1 + KA.PA + Kc.pc), where KA and Kc are the adsorption equilibrium constants. The rate controlling step for this reaction isA. absorption of A.

Chemical Reaction Engineering
Which of the following will give maximum gas conversion?

Chemical Reaction Engineering
Which of the following does not produce a change in the value of rate constant of a reaction?

Chemical Reaction Engineering
Consider the 'n' th order irreversible liquid phase reaction A → B. Which one of the following plots involving half life of the reaction (t1/2) and the initial reactant concentration (CA0) gives a straight line plot?