 
			 
			MCQOPTIONS
 Saved Bookmarks
				This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. | Potassium hydroxide boils at what temperature? | 
| A. | 1260°C | 
| B. | 1320°C | 
| C. | 1840°C | 
| D. | 2560°C | 
| Answer» C. 1840°C | |
| 2. | Potassium hydroxide melts at what temperature? | 
| A. | 260°C | 
| B. | 360°C | 
| C. | 460°C | 
| D. | 560°C | 
| Answer» C. 460°C | |
| 3. | What is the formaldehyde level in phenolic ester in casting? | 
| A. | Less than 0.2ppm | 
| B. | Less than 0.3ppm | 
| C. | Less than 0.4ppm | 
| D. | Less than 0.5ppm | 
| Answer» E. | |
| 4. | POTASSIUM_HYDROXIDE_MELTS_AT_WHAT_TEMPERATURE??$ | 
| A. | 260°C | 
| B. | 360°C | 
| C. | 460°C | 
| D. | 560°C | 
| Answer» C. 460¬¨¬®‚Äö√†√ªC | |
| 5. | Potassium_hydroxide_boils_at_what_temperature?$ | 
| A. | 1260°C | 
| B. | 1320°C | 
| C. | 1840°C | 
| D. | 2560°C | 
| Answer» C. 1840¬¨¬®‚Äö√†√ªC | |
| 6. | What should the total percentage of re-use of sand in reclamation be? | 
| A. | 80% | 
| B. | 85% | 
| C. | 90% | 
| D. | 95% | 
| Answer» E. | |
| 7. | What is the phenol level in phenolic ester in casting? | 
| A. | Less than 2ppm | 
| B. | Less than 3ppm | 
| C. | Less than 4ppm | 
| D. | Less than 5ppm | 
| Answer» B. Less than 3ppm | |
| 8. | What is the formaldehyde level in phenolic ester in mixing? | 
| A. | Less than 0.2 parts per million | 
| B. | Less than 0.3 parts per million | 
| C. | Less than 0.4 parts per million | 
| D. | Less than 0.5 parts per million | 
| Answer» E. | |
| 9. | For casting, in phenolic esters, formaldehyde levels are low. | 
| A. | True | 
| B. | False | 
| Answer» B. False | |
| 10. | What is the source of fuel of the boiler in process energy? | 
| A. | Waste from FA processing | 
| B. | Waste from CO<sub>2</sub> production | 
| C. | Waste from SO<sub>2</sub> production | 
| D. | Waste from NO<sub>2</sub> production | 
| Answer» B. Waste from CO<sub>2</sub> production | |
| 11. | From what is furfural alcohol derived? | 
| A. | Carbon dioxide | 
| B. | Waste water | 
| C. | Waste vegetables | 
| D. | Sulphur dioxide | 
| Answer» D. Sulphur dioxide | |
| 12. | What is the pH level of leachate? | 
| A. | 1-3 | 
| B. | 3-6 | 
| C. | 6-9 | 
| D. | 9-12 | 
| Answer» D. 9-12 | |