MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The diffusion of gas is ____________ |
| A. | Linear process |
| B. | Slow process |
| C. | Spontaneous process |
| D. | Non- spontaneous process |
| Answer» D. Non- spontaneous process | |
| 2. |
What is the unit of diffusion flux J in the Fick s law equation? |
| A. | mol m<sup> 2</sup> s<sup> 1</sup> |
| B. | mol m<sup>2</sup> s<sup> 1</sup> |
| C. | mol m<sup>2</sup> s<sup>1</sup> |
| D. | mol m<sup> 2</sup> s<sup>1</sup> |
| Answer» B. mol m<sup>2</sup> s<sup> 1</sup> | |
| 3. |
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. | n<a href="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-molecular-diffusion-q6.png"><img alt="Find molecular diffusivity for the system if pressure of 100 kPa & temperature of 20 C" class="alignnone size-full wp-image-208244" height="43" src="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-molecular-diffusion-q6.png" width="134"/></a> |
| B. | 2.898 10<sup>-5</sup> m<sup>2</sup>/sec |
| C. | 3.898 10<sup>-5</sup> m<sup>2</sup>/sec |
| D. | 2.989 10<sup>-5</sup> m<sup>2</sup>/sec |
| E. | 3.989 10<sup>-5</sup> m<sup>2</sup>/sec |
| Answer» C. 3.898 10<sup>-5</sup> m<sup>2</sup>/sec | |
| 4. |
Refer to Q6, and calculate the partial pressure at a point 0.02 m apart from point 1. |
| A. | 20.63 kPa |
| B. | 28.33 kPa |
| C. | 28.63 kPa |
| D. | 20.33 kPa |
| Answer» C. 28.63 kPa | |
| 5. |
What is Fick s law applicable to? |
| A. | Momentum transfer |
| B. | Heat transfer |
| C. | Mass transfer |
| D. | Velocity transfer |
| Answer» D. Velocity transfer | |