MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the unit of diffusion flux “J” in the Fick’s law equation? |
| A. | mol m−2 s−1 |
| B. | mol m2 s−1 |
| C. | mol m2 s1 |
| D. | mol m−2 s1 |
| Answer» B. mol m2 s−1 | |
| 2. |
In a gas mixture of hydrogen and oxygen, steady state equimolar counter diffusion is occurring at a total pressure of 100 kPa and temperature of 20°C. If the partial pressures of oxygen at two planes 0.01 m apart, and perpendicular to the direction of diffusion are 15 kPa and 5 kPa, respectively and the mass diffusion flux of oxygen in the mixture is 1.6 * 10–5 kmol/m2.sec, calculate the molecular diffusivity for the system. |
| A. | For equimolar counter current diffusion: |
| B. | 2.898×10-5 m2/sec |
| C. | 3.898×10-5 m2/sec |
| D. | 2.989×10-5 m2/sec |
| E. | 3.989×10-5 m2/sec |
| Answer» C. 3.898×10-5 m2/sec | |
| 3. |
Refer to Q4, and calculate the diffusivity of O2 in a gas mixture. |
| A. | 1.539×10-5 m2/sec |
| B. | 1.639×10-5 m2/sec |
| C. | 1.530×10-5 m2/sec |
| D. | 1.630×10-5 m2/sec |
| Answer» B. 1.639×10-5 m2/sec | |
| 4. |
What is Fick’s law applicable to? |
| A. | Momentum transfer |
| B. | Heat transfer |
| C. | Mass transfer |
| D. | Velocity transfer |
| Answer» D. Velocity transfer | |
| 5. |
In the following equation, what does y signifies? |
| A. | Dispersion |
| B. | Displacement |
| C. | Diffusion |
| D. | Distance |
| Answer» E. | |