MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Refractoriness of a material should always be greater than its application temperatures. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Silicon carbide is widely used as refractory material in the mould making for casting processes. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Refractories are generally inorganic non-metallic materials which can resist very high temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The fluxes used in the casting process must have low vapour pressure. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
What should be the melting point (in C) of flux used for mixing with aluminium casting? |
| A. | 440 C |
| B. | 555 C |
| C. | 606 C |
| D. | 660 C |
| Answer» E. | |
| 6. |
Degassing process during the formation of castings can prevent inclusion of hydrogen absolutely. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following materials are commonly used as flux in the casting process to prevent oxidation? |
| A. | Sodium silicate |
| B. | Lead |
| C. | Sodium chloride |
| D. | Sodium carbonate |
| Answer» D. Sodium carbonate | |