MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
There is no difference between diffusion and net diffusion. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In dilute aqueous solutions which of the following can be the value of diffusion coefficient at room temperature? |
| A. | 0.7e<sup>-9</sup> |
| B. | 0.7e<sup>-10</sup> |
| C. | 2.2e<sup>-9</sup> |
| D. | 2.2e<sup>-10</sup> |
| Answer» B. 0.7e<sup>-10</sup> | |
| 3. |
The diffusivity of copper in copper increases by how many times when the temperature is increased from 500 C to 1000 C? |
| A. | 200000 |
| B. | 100000 |
| C. | 150000 |
| D. | 170000 |
| Answer» B. 100000 | |
| 4. |
Which of the following is not a part of Fick s first law? |
| A. | Diffusion flux |
| B. | Diffusion coefficient |
| C. | Change in concentration with respect to the position in space |
| D. | Change in concentration with respect to time |
| Answer» E. | |