MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Applied Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the thickness of the MoS2 film? |
| A. | 10 m |
| B. | 15 m |
| C. | 5 m |
| D. | 20 m |
| Answer» C. 5 m | |
| 2. |
What is the range of coefficient of friction for solid lubricants? |
| A. | 0.005-0.01 |
| B. | 0.001-0.01 |
| C. | 0.0001-0.001 |
| D. | 0.0005-0.001 |
| Answer» B. 0.001-0.01 | |
| 3. |
The lubricant should have __________ vapor pressure. |
| A. | High |
| B. | Extreme |
| C. | Moderate |
| D. | Low |
| Answer» E. | |
| 4. |
If melting point increases, then the atomic bonds will _________ |
| A. | Become strong |
| B. | Become weak |
| C. | Be destroyed |
| D. | Be with moderate strength |
| Answer» D. Be with moderate strength | |
| 5. |
Mobility of the solid lubricants on the adsorbents promotes ___________ |
| A. | Self-healing |
| B. | Maintain the molecular structure |
| C. | Ineffectiveness |
| D. | Effectiveness |
| Answer» B. Maintain the molecular structure | |
| 6. |
Soaps are prepared by chemical treating of _________ by strong alkaline solutions. |
| A. | Oils and salts |
| B. | Oils and fats |
| C. | Salts and fats |
| D. | Fats and proteins |
| Answer» C. Salts and fats | |
| 7. |
The molecular structure of the organic lubricants consists of ____________ |
| A. | pyramidal |
| B. | tetrahedral |
| C. | trigonal planar |
| D. | long chain |
| Answer» E. | |