MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
Diffusion is slower in polycrystalline structure than single crystalline structure. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Diffusion is slower in polycrystalline structure than single crystalline structure? |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Diffusion is slower for _________ |
| A. | Open crystal structure |
| B. | Low density materials |
| C. | Materials with lower melting temperature |
| D. | Materials with covalent bonding |
| Answer» E. | |
| 4. |
How is the rate of diffusion affected by the weight of diffusing atom? |
| A. | Lighter atoms diffuse faster |
| B. | Heavier atoms diffuse faster |
| C. | Lighter atom diffuses slower |
| D. | Rate of diffusion doesn’t depend on weight of diffusing atom |
| Answer» B. Heavier atoms diffuse faster | |
| 5. |
How is diffusion rate related to diffusion distance? |
| A. | Directly related |
| B. | Inversely related |
| C. | Not related |
| D. | Directly related to square of diffusion distance |
| Answer» C. Not related | |
| 6. |
How is the diffusion rate affected by concentration difference? |
| A. | Diffusion rate is not affected |
| B. | Higher the concentration difference, higher the diffusion rate |
| C. | Lower the concentration difference, higher the diffusion rate |
| D. | Higher the concentration difference, lower the diffusion rate |
| Answer» C. Lower the concentration difference, higher the diffusion rate | |
| 7. |
If we increase the temperature, how is the diffusion rate affected? |
| A. | Diffusion rate increases |
| B. | Diffusion rate decreases |
| C. | Diffusion rate decreases drastically |
| D. | Diffusion rate is not affected |
| Answer» B. Diffusion rate decreases | |
| 8. |
When something burns on the stove in the kitchen, the whole kitchen starts smelling smoky due to diffusion. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
On which of the following does diffusion not depend on? |
| A. | Temperature |
| B. | Pressure |
| C. | Concentration difference |
| D. | Diffusion distance |
| Answer» E. | |