MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials and Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which copper alloy is used for making cutlery? |
| A. | German silver |
| B. | Cupronickel |
| C. | Brass |
| D. | Bronze |
| Answer» B. Cupronickel | |
| 2. |
Which of the following is a heat treated alloy? |
| A. | Monel metal |
| B. | Cupronickel |
| C. | German silver |
| D. | K monel |
| Answer» E. | |
| 3. |
Monel metal is a type of ______ alloy. |
| A. | Nickel silver |
| B. | Cupronickel |
| C. | Gunmetal |
| D. | Sterling silver |
| Answer» C. Gunmetal | |
| 4. |
Highest corrosion resistance in seawater is found is ______ copper alloys. |
| A. | Nickel silver |
| B. | Bronze |
| C. | Cupronickel |
| D. | Gunmetal |
| Answer» D. Gunmetal | |
| 5. |
Which of the following is an application of admiralty gunmetal? |
| A. | Bearings |
| B. | Marine castings |
| C. | Hydraulic valves |
| D. | Statues |
| Answer» E. | |
| 6. |
Addition of zinc to gun metals results in ______ |
| A. | Improved fluidity |
| B. | Increased machinability |
| C. | Increased castability |
| D. | Improved toughness |
| Answer» B. Increased machinability | |
| 7. |
Alloys containing copper, tin, and zinc are known as ______ |
| A. | Gunmetal |
| B. | Bronze |
| C. | Brass |
| D. | Cupro-nickel |
| Answer» B. Bronze | |
| 8. |
Copper coins are made using ______ |
| A. | Bell bronze |
| B. | Aluminum bronze |
| C. | Coinage bronze |
| D. | Silicon bronze |
| Answer» D. Silicon bronze | |
| 9. |
Why is silicon bronze classified as a bronze alloy despite having no tin? |
| A. | Due to strength |
| B. | Due to its color |
| C. | Due to ductility |
| D. | Good machinability |
| Answer» C. Due to ductility | |
| 10. |
______ is added to aluminum bronze to increase strength and hardness. |
| A. | Nickel |
| B. | Lead |
| C. | Iron |
| D. | Silicon |
| Answer» D. Silicon | |
| 11. |
Which bronze alloy is commonly used as bearing alloy? |
| A. | Phosphor bronze |
| B. | Silicon bronze |
| C. | Aluminum bronze |
| D. | Leaded bronze |
| Answer» E. | |
| 12. |
Bell bronze is an alloy containing _______ |
| A. | 78% Cu, 22% Sn |
| B. | 95.5% Cu, 3% Sn, 1.5% Zn |
| C. | 95% Cu, 3% Si, 1% Mn, 1% Fe |
| D. | 75% Cu, 5% Sn, 18% Pb, 2% Ni |
| Answer» B. 95.5% Cu, 3% Sn, 1.5% Zn | |
| 13. |
Tin content in bronzes is kept below 12% due to their tendency to become _______ |
| A. | Less conductive |
| B. | Brittle |
| C. | Radioactive |
| D. | Less corrosion resistant |
| Answer» C. Radioactive | |