MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Reaction Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If CA is the final concentration and CA0 is the initial concentration, the conversion of a reaction is expressed as ____ |
| A. | ( frac{C_{A0}-C_A}{(C_{A0})} ) |
| B. | ( frac{C_{A0}-C_A}{(-r_A)} )V |
| C. | ( frac{C_{A0}-C_A}{(-r_A)V} ) |
| D. | ( frac{C_A}{(C_{A0})} ) |
| Answer» B. ( frac{C_{A0}-C_A}{(-r_A)} )V | |
| 2. |
If the conversion of a first order liquid phase reaction occurring in a CSTR is 75%, molar feed rate is 5 mol/min, the rate of the reaction is 5 ( frac{mol}{litre.min} ) then the volume of the reactor (in litre) is ____ |
| A. | 0.5 |
| B. | 0.75 |
| C. | 0.33 |
| D. | 0.4 |
| Answer» C. 0.33 | |
| 3. |
The performance equation of a PFR is ____ |
| A. | ( frac{F_{A_0}}{dV} = frac{dX_A}{(-r_A)} ) |
| B. | ( frac{dV}{F_{A_0}} = frac{(-r_A)}{dX_A} ) |
| C. | ( frac{F_{A_0}}{dV} = frac{(-r_A)}{dX_A} ) |
| D. | ( frac{F_{A_0}}{dX_A} = frac{(-r_A)}{dV} ) |
| Answer» D. ( frac{F_{A_0}}{dX_A} = frac{(-r_A)}{dV} ) | |
| 4. |
The performance equation of a CSTR is ____ |
| A. | ( frac{F_{A_0}}{V} = frac{(-r_A)}{X_A} ) |
| B. | ( frac{F_{A_0}}{V} = frac{X_A}{(r_A)} ) |
| C. | ( frac{V}{X_A} = frac{(-r_A)}{F_{A_0}} ) |
| D. | ( frac{F_{A_0}}{V} = frac{X_A}{-r_A} ) |
| Answer» B. ( frac{F_{A_0}}{V} = frac{X_A}{(r_A)} ) | |
| 5. |
For a PFR, the area under the curve ( frac{1}{-r_A} ) vs XA gives ____ |
| A. | ( frac{F_{A_0}}{dV} ) |
| B. | ( frac{dV}{F_{A_0}} ) |
| C. | dVC<sub>A0</sub> |
| D. | dVF<sub>A0</sub> |
| Answer» C. dVC<sub>A0</sub> | |
| 6. |
Which one of the following combinations gives the highest conversion for second order reaction? |
| A. | PFR followed by smaller CSTR followed by a bigger CSTR |
| B. | PFR followed by bigger CSTR followed by a bigger CSTR |
| C. | Smaller CSTR followed by PFR followed by a bigger CSTR |
| D. | Bigger CSTR followed by a PFR followed by smaller CSTR |
| Answer» B. PFR followed by bigger CSTR followed by a bigger CSTR | |
| 7. |
Which of the following is true for a reaction occurring in a batch reactor? |
| A. | The accumulation term is zero |
| B. | Only the component input term is zero |
| C. | Only the component output term is zero |
| D. | Both the component input and output terms are zero |
| Answer» E. | |
| 8. |
State true or false.
|
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
State true or false.
|
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
The combination of ideal reactors among the following is ____ |
| A. | Plug flow reactor and batch reactor |
| B. | Batch reactor and mixed flow reactor |
| C. | Plug flow reactor and mixed flow reactor |
| D. | Batch reactor only |
| Answer» D. Batch reactor only | |