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This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
1. |
The figure shows a FET using CNT. Identify CNT. |
A. | A |
B. | B |
C. | C |
D. | D |
Answer» E. | |
2. |
Carbon nanotubes are poor transmitters of electromagnetic radiations due to their ____________ |
A. | High conductivity |
B. | Large surface area |
C. | High porosity |
D. | Chemical Stability |
Answer» B. Large surface area | |
3. |
The main purpose of CNTs in fuel cells is ___________ |
A. | Production of energy |
B. | Active medium |
C. | Catalyst |
D. | Storage |
Answer» E. | |
4. |
Identify the process. |
A. | Synthesis of C60 |
B. | Synthesis of CNTs |
C. | Chemical vapour deposition |
D. | Carbon discharge |
Answer» C. Chemical vapour deposition | |
5. |
Carbon nanotubes display magnetoresistance at low temperature. |
A. | True |
B. | False |
Answer» B. False | |
6. |
The carbon tubes have high conductivity. |
A. | True |
B. | False |
Answer» B. False | |
7. |
The metallic tubes have which kind of structure? |
A. | Armchair |
B. | Chiral |
C. | Boat |
D. | Achiral |
Answer» B. Chiral | |
8. |
For the synthesis of CNTs, the quartz tube is heated up to ____________ |
A. | 1000℃ |
B. | 1200℃ |
C. | 1400℃ |
D. | 1600℃ |
Answer» C. 1400℃ | |
9. |
CNTs are capped on both ends with which carbon nanostructure? |
A. | Graphite |
B. | Diamond |
C. | C60 |
D. | Benzene |
Answer» D. Benzene | |
10. |
CNTs stands for ____________ |
A. | Carbon Nanotubes |
B. | Carbon Nanotechnology |
C. | Carbon Nanoscience and technology |
D. | Carbon Nine Technology |
Answer» B. Carbon Nanotechnology | |
11. |
C60 is soluble in ____________ |
A. | Water |
B. | Ammonia |
C. | HCl |
D. | Benzene |
Answer» E. | |
12. |
The configuration of Buckminsterfullerene is ____________ |
A. | 12 Hexagons and 22 Pentagons |
B. | 18 Hexagons and 15 Pentagon |
C. | 20 Hexagon and 12 Pentagon |
D. | 15 Hexagon and 15 Pentagon |
Answer» D. 15 Hexagon and 15 Pentagon | |