MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The efficiency of today s best solar cell is about ___________ |
| A. | 15-20% |
| B. | 40% |
| C. | 50% |
| D. | 75% |
| Answer» C. 50% | |
| 2. |
Quantum confinement results in ___________ |
| A. | Energy gap in semiconductor is proportional to the inverse of the square root of the size |
| B. | Energy gap in semiconductor is proportional to the inverse of the size |
| C. | Energy gap in semiconductor is proportional to the square of size |
| D. | Energy gap in semiconductor is proportional to the inverse of the square of size |
| Answer» E. | |
| 3. |
The properties like dispersibility, conductivity, etc changes on varying the ___________ |
| A. | Size |
| B. | Composition |
| C. | Surface properties |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 4. |
The properties like melting point, solubility, color, etc changes on varying the ___________ |
| A. | Size |
| B. | Composition |
| C. | Surface properties |
| D. | None of the mentioned |
| Answer» B. Composition | |