MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Aerospace Materials and Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
It is impossible to recycle used copper products. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The final output after processing of copper ores to be purified produces around ____________ pure copper. |
| A. | 100% |
| B. | 45% |
| C. | 99.9% |
| D. | 86% |
| Answer» D. 86% | |
| 3. |
Smelting is done to eradicate unwanted materials like ___________ to the fullest extent possible. |
| A. | copper |
| B. | copper and gangue minerals |
| C. | sulfur |
| D. | sulfur and gangue minerals |
| Answer» E. | |
| 4. |
Oxide ores of copper cannot be processed using hydrometallurgy. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Copper ores typically contain less than _________ of copper. |
| A. | 0.15% |
| B. | 0.2% |
| C. | 1% |
| D. | 0.4% |
| Answer» D. 0.4% | |
| 6. |
Sulfide ores are typically processed through a technique known as __________ |
| A. | cathode |
| B. | pyrometallurgy |
| C. | hydrometallurgy |
| D. | zarconsis |
| Answer» C. hydrometallurgy | |
| 7. |
___________ is a sulfide ore of copper. |
| A. | Chalcocite |
| B. | Cuprite |
| C. | Magnesite |
| D. | Azurite |
| Answer» B. Cuprite | |
| 8. |
Which of the following techniques are used in the extraction of copper? |
| A. | Refining, down process |
| B. | Smelting, vacuum pump |
| C. | Roasting, refining |
| D. | Roasting |
| Answer» D. Roasting | |
| 9. |
The first process in extraction of an element from ore is typically ______ |
| A. | roasting |
| B. | electrolysis |
| C. | crushing |
| D. | smelting |
| Answer» D. smelting | |
| 10. |
Sulfide ores contain around _____ copper. |
| A. | 9 10% |
| B. | 8 12% |
| C. | 4 5% |
| D. | 0.5 2% |
| Answer» E. | |