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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 | |