MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Powder Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the reducing agent is used for the production of Zn powder by condensation method? |
| A. | CaC<sub>2</sub> |
| B. | Charcoal |
| C. | CO<sub>2</sub> |
| D. | H<sub>2</sub> |
| Answer» C. CO<sub>2</sub> | |
| 2. |
Which of the following is not a characteristic of powder produced by precipitation from an aqueous solution method? |
| A. | Porous in nature |
| B. | High apparent density |
| C. | Low apparent density |
| D. | Difficult to remove the adherent salts |
| Answer» C. Low apparent density | |
| 3. |
Which of the following is added to the SnCl2 solution to precipitate Sn? |
| A. | Al |
| B. | Zn |
| C. | Cu |
| D. | Fe |
| Answer» C. Cu | |
| 4. |
The method employing the principle of precipitating a metal from its aqueous solution by addition of less noble metal (higher in electromotive series) is called _____ |
| A. | condensation method |
| B. | gaseous Reduction process |
| C. | precipitation from aqueous solution method |
| D. | precipitation from fused salts method |
| Answer» D. precipitation from fused salts method | |
| 5. |
Which of the following is a variant of the hydrometallurgical method? |
| A. | Peace River Process |
| B. | Peace Sea Process |
| C. | Peace Extraction Process |
| D. | Peace Reduction Process |
| Answer» B. Peace Sea Process | |
| 6. |
The process used on a commercial scale for the production of Ni, Co and Cu powder by the hydrometallurgical method is called _____ |
| A. | gaseous Reduction process |
| B. | precipitation from fused salts method |
| C. | oxidation and Decarburization method |
| D. | condensation method |
| Answer» B. precipitation from fused salts method | |
| 7. |
Which of the following are physicochemical methods of powder production? |
| A. | Thermal decomposition and graining |
| B. | Condensation method and milling |
| C. | Condensation method, gaseous pyrolysis method, and reduction method; |
| D. | Condensation method, gaseous pyrolysis method, reduction method, and cold stream process |
| Answer» D. Condensation method, gaseous pyrolysis method, reduction method, and cold stream process | |
| 8. |
Intergranular Corrosion process was used extensively for the production of which of the following powder? |
| A. | Stainless steel |
| B. | Copper |
| C. | Niobium |
| D. | Brass |
| Answer» B. Copper | |
| 9. |
Which of the following method has the principle that grain boundaries are preferential sites for chemical attack than grains? |
| A. | Gaseous Reduction process |
| B. | Hydrometallurgical process |
| C. | Intergranular Corrosion process |
| D. | Oxidation and Decarburization method |
| Answer» D. Oxidation and Decarburization method | |
| 10. |
Mannesmann process employed for the production of Fe powders can be regarded as oxidation and decarburization method. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
Which process is used for the production of pure reactive metal powder, particularly niobium? |
| A. | Intergranular Corrosion process |
| B. | Oxidation and Decarburization method |
| C. | Gaseous Reduction process |
| D. | Reduction method |
| Answer» C. Gaseous Reduction process | |