MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
COPPER_ALLOYS_ARE_MOSTLY_HOT_TREATED??$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Iron_needs_higher_temperature_ranges_for_its_extraction.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
What is the tensile strength of pure annealed copper? |
| A. | 324 MPa |
| B. | 676 MPa |
| C. | 759 MPa |
| D. | 209 MPa |
| Answer» E. | |
| 4. |
What is the tensile strength of cast manganese bronze? |
| A. | 490 MPa |
| B. | 759 MPa |
| C. | 676 MPa |
| D. | 324 MPa |
| Answer» B. 759 MPa | |
| 5. |
Which of the following materials, on adding with copper, doesn’t increase its strength?$ |
| A. | Cadmium |
| B. | Silver |
| C. | Sodium |
| D. | Aluminium Oxide |
| Answer» D. Aluminium Oxide | |
| 6. |
What amount of impurity is allowed for copper to be used in electric applications? |
| A. | 0.1% |
| B. | 0.2% |
| C. | 0.3% |
| D. | 0.4% |
| Answer» B. 0.2% | |
| 7. |
Which colour is obtained by copper alloys, when zinc is added to it? |
| A. | Red |
| B. | Blue |
| C. | Silver |
| D. | Yellow |
| Answer» E. | |
| 8. |
What is the density of copper alloys? |
| A. | 6.67 g/cc |
| B. | 7.87 g/cc |
| C. | 8.93 g/cc |
| D. | 5.77 g/cc |
| Answer» D. 5.77 g/cc | |
| 9. |
What is the general density of steels? |
| A. | 6.67 g/cc |
| B. | 7.87 g/cc |
| C. | 8.77 g/cc |
| D. | 5.77 g/cc |
| Answer» C. 8.77 g/cc | |