MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Separation Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When is fick’s law applied? |
| A. | For passive diffusion down the concentration gradient |
| B. | Passive osmosis along concentration gradient |
| C. | Active osmosis along concentration gradient |
| D. | Active and passive movement of molecule along concentration gradient |
| Answer» B. Passive osmosis along concentration gradient | |
| 2. |
What id D ab called in the Fick’s law? |
| A. | Thermal conductivity |
| B. | Density coefficient |
| C. | Diffusivity |
| D. | Electrical conductivity |
| Answer» D. Electrical conductivity | |
| 3. |
Which of the following is correct representation of Fick’s law of diffusion? |
| A. | J z = -D*dc a /dz |
| B. | J z = -D*dT/ds |
| C. | J z = D*dc a /dz |
| D. | J z = -D*c a /dz |
| Answer» B. J z = -D*dT/ds | |
| 4. |
WHEN_IS_FICK‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_LAW_APPLIED??$# |
| A. | For passive diffusion down the concentration gradient |
| B. | Passive osmosis along concentration gradient |
| C. | Active osmosis along concentration gradient |
| D. | Active and passive movement of molecule along concentration gradient |
| Answer» B. Passive osmosis along concentration gradient | |
| 5. |
Which diffusion occurs when turbulent motion is there? |
| A. | Molar diffusion |
| B. | Eddy diffusion |
| C. | Charge diffusion |
| D. | No diffusion |
| Answer» C. Charge diffusion | |
| 6. |
Why does the diffusion of A with respect to B occur? |
| A. | Due to concentration gradient |
| B. | To to volume gradient |
| C. | Due to velocity gradiet |
| D. | Due to change in heat |
| Answer» B. To to volume gradient | |
| 7. |
Which of the following is FALSE about unimolar diffusion? |
| A. | N b = N a |
| B. | N= N a |
| C. | N a = x a N a – cD ab (dx a /dz) |
| D. | X b N a = cD ba (dx b /dz) |
| Answer» B. N= N a | |
| 8. |
Which of the following is untrue about equimolar diffusion? |
| A. | N <sub>a</sub> + N <sub>b</sub> =0 |
| B. | J <sub>a</sub> = J <sub>b</sub> |
| C. | N=0 |
| D. | N <sub>a</sub> = -cD BA (dx <sub>b</sub> /dz) |
| Answer» C. N=0 | |
| 9. |
Which of the following formulae is right about molar flux? |
| A. | N <sub>a</sub> = x <sub>A</sub> N – D <sub>ab</sub> (dx <sub>a</sub> /d z ) |
| B. | N <sub>a</sub> = x <sub>A</sub> N – (dx <sub>a</sub> /d z ) |
| C. | N <sub>a</sub> = x <sub>A</sub> N – cD <sub>ab</sub> |
| D. | N <sub>a</sub> = x <sub>A</sub> N – cD <sub>ab</sub> (dx <sub>a</sub> /d z ) |
| Answer» E. | |
| 10. |
What id D ab called in the Fick’s law?$ |
| A. | Thermal conductivity |
| B. | Density coefficient |
| C. | Diffusivity |
| D. | Electrical conductivity |
| Answer» D. Electrical conductivity | |
| 11. |
Which of the following is correct representation of Fick’s law of diffusion?$ |
| A. | J <sub>z</sub> = -D*dc <sub>a</sub> /dz |
| B. | J <sub>z</sub> = -D*dT/ds |
| C. | J <sub>z</sub> = D*dc <sub>a</sub> /dz |
| D. | J <sub>z</sub> = -D*c <sub>a</sub> /dz |
| Answer» B. J <sub>z</sub> = -D*dT/ds | |
| 12. |
Which of the following is Fourier law of heat conduction? |
| A. | q <sub>z</sub> = k*dT <sub>z</sub>/dZ |
| B. | q <sub>z</sub> = – k*dT <sub>z</sub> /dZ |
| C. | q <sub>z</sub> = k*T <sub>z</sub> /dZ |
| D. | q <sub>z</sub> = k*dQ <sub>z</sub> /dZ |
| Answer» C. q <sub>z</sub> = k*T <sub>z</sub> /dZ | |