MCQOPTIONS
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MCQOPTIONS
This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In light alloys, metal mold reaction can be suppressed by adding Helium. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
What is differential freezing? |
| A. | Increase in oxygen concentration |
| B. | Increase in nitrogen concentration |
| C. | Increase in carbon concentration |
| D. | Increase in hydrogen concentration |
| Answer» E. | |
| 3. |
What is the chemical formula of silica? |
| A. | SiO |
| B. | SiO<sub>2</sub> |
| C. | SiO<sub>3</sub> |
| D. | SiO<sub>4</sub> |
| Answer» C. SiO<sub>3</sub> | |