MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Building Construction knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The percentage composition of copper and zinc in yellow brass is ___________ |
| A. | 35% and 65% |
| B. | 65% and 35% |
| C. | 20% and 80% |
| D. | 80% and 20% |
| Answer» C. 20% and 80% | |
| 2. |
The percentage composition of copper in white brass and red brass is __________ and _______ respectively. |
| A. | 40%, 55% |
| B. | 55%, 40% |
| C. | 10%, 85% |
| D. | 85%, 10% |
| Answer» D. 85%, 10% | |
| 3. |
When 1% of tin is added to cartridge metal, it is known as ________ |
| A. | Naval brass |
| B. | Muntz metal |
| C. | Red brass |
| D. | Admiralty metal |
| Answer» E. | |
| 4. |
Low brass contains 80% copper and 20% tin. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
The composition of delta metal is _________ |
| A. | 60% iron, 3% zinc and 37% copper |
| B. | 3% iron, 60% zinc and 37% copper |
| C. | 3% iron, 37% zinc and 60% copper |
| D. | 37% iron, 60% zinc and 3% copper |
| Answer» D. 37% iron, 60% zinc and 3% copper | |
| 6. |
The percentage of copper and zinc in cartridge brass is _______ and __________ respectively. |
| A. | 30%,70% |
| B. | 70%, 30% |
| C. | 40%, 60% |
| D. | 60%, 40% |
| Answer» C. 40%, 60% | |
| 7. |
Y-alloy is an important alloy of ___________ |
| A. | Manganese |
| B. | Iron |
| C. | Aluminium |
| D. | Gold |
| Answer» D. Gold | |
| 8. |
Which of the following is not an ore of Magnesium? |
| A. | Cassiterite |
| B. | Dolomite |
| C. | Kieserite |
| D. | Carnallite |
| Answer» B. Dolomite | |
| 9. |
Which of the following is not a property of copper? |
| A. | Copper is a good conductor of heat |
| B. | The melting point of copper is 1083°C |
| C. | Copper becomes brittle above its melting point |
| D. | The specific gravity of copper is 8.9 |
| Answer» D. The specific gravity of copper is 8.9 | |
| 10. |
Which of the following is not a property of cobalt? |
| A. | Cobalt is a lustrous white metal |
| B. | It is attacked by alkalies |
| C. | Cobalt is malleable |
| D. | Cobalt is ductile |
| Answer» C. Cobalt is malleable | |
| 11. |
Arsenide and sulphoarsenide are two important ores of _________ |
| A. | Aluminium |
| B. | Cobalt |
| C. | Steel |
| D. | Iron |
| Answer» C. Steel | |
| 12. |
Which of the following properties is not exhibited by aluminium? |
| A. | Aluminium is a poor conductor of heat and electricity |
| B. | Aluminium is light in weight |
| C. | It readily dissolves in HCl |
| D. | Aluminium is highly resistant to corrosion |
| Answer» B. Aluminium is light in weight | |
| 13. |
Aluminium is commercially produced usually from ________ |
| A. | Hematite |
| B. | Pyrite |
| C. | Malachite |
| D. | Bauxite |
| Answer» E. | |