MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following are frequently found impurities in magnesium alloys? |
| A. | Copper, vanadium |
| B. | Aluminium, nickel |
| C. | Nickel, iron |
| D. | Nickel, Indium |
| Answer» D. Nickel, Indium | |
| 2. |
Magnesium is found in only two ores in the world. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Magnesium is frequently found in its natural state. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The specific gravity of magnesium is __________ |
| A. | 1.8 |
| B. | 7.9 |
| C. | 2.7 |
| D. | 13.8 |
| Answer» B. 7.9 | |
| 5. |
Pure magnesium weighs around ___________ of aluminium. |
| A. | 98% |
| B. | 2% |
| C. | 39% |
| D. | 65% |
| Answer» E. | |
| 6. |
Magnesium is a ___________ metal. |
| A. | bluish-grey |
| B. | reddish |
| C. | silvery-white |
| D. | yellow |
| Answer» D. yellow | |
| 7. |
Magnesium is frequently alloyed with __________ and _________ |
| A. | aluminium, zinc |
| B. | uranium, aluminium |
| C. | vanadium, zinc |
| D. | zinc, uranium |
| Answer» B. uranium, aluminium | |
| 8. |
Magnesium alloys are __________ and __________ |
| A. | non-magnetic, non-sparkling |
| B. | magnetic, sparkling |
| C. | non-magnetic, non-sparkling |
| D. | magnetic, non-sparkling |
| Answer» D. magnetic, non-sparkling | |
| 9. |
The melting point of magnesium is ___________ |
| A. | 1250° |
| B. | 327° |
| C. | 650°C |
| D. | 1668°C |
| Answer» D. 1668°C | |
| 10. |
The atomic number of magnesium is __________ |
| A. | 2 |
| B. | 15 |
| C. | 5 |
| D. | 12 |
| Answer» E. | |