MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the most suitable ore to undergo electrochemical process? |
| A. | Kaolinite |
| B. | Calamine |
| C. | Bauxite |
| D. | Cinnabar |
| Answer» D. Cinnabar | |
| 2. |
Which of the following is an example of electrochemical principles of metallurgy? |
| A. | Baeyer s process |
| B. | Solvay process |
| C. | Bergius process |
| D. | Hall-Heroult process |
| Answer» E. | |
| 3. |
Electrochemical processes in metallurgy are spontaneous. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
What is the temperature maintained in Hall-Heroult process? |
| A. | 800 -840 C |
| B. | 840 -880 C |
| C. | 900 -940 C |
| D. | 940 -980 C |
| Answer» E. | |
| 5. |
What is the net reaction in Hall-Heroult process? |
| A. | 2Al<sub>2</sub>O<sub>3</sub> + 3C 4Al + 3CO<sub>2</sub> |
| B. | 4Al<sub>2</sub>O<sub>3</sub> + 3C 4Al + 6CO<sub>2</sub> |
| C. | F<sub>2</sub> + Al<sub>2</sub>O<sub>3</sub> Al + F<sub>2</sub>O<sub>3</sub> |
| D. | Na<sub>3</sub>AlF<sub>6</sub> AlF<sub>3</sub> + 3NaF |
| Answer» B. 4Al<sub>2</sub>O<sub>3</sub> + 3C 4Al + 6CO<sub>2</sub> | |
| 6. |
In the metallurgy of aluminium, purified bauxite is mixed with Na2AlF6. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
What is the anode and cathode used in Hall-Heroult process? |
| A. | Zinc and copper |
| B. | Iron and copper |
| C. | Carbon and zinc |
| D. | Graphite and carbon |
| Answer» E. | |
| 8. |
What is the term given to the extraction of aluminium from bauxite by using electrochemical process? |
| A. | Baeyer s process |
| B. | Hall-Heroult process |
| C. | Mc-Arthur process |
| D. | Blasts process |
| Answer» C. Mc-Arthur process | |
| 9. |
What is the process used to extract sodium from halide ores such as sodium chloride (NaCl)? |
| A. | Pyro metallurgy |
| B. | Hydro metallurgy |
| C. | Electro metallurgy |
| D. | Magnetic separation |
| Answer» D. Magnetic separation | |
| 10. |
Which of the following metals are reduced from molten salt solutions by electrolysis? |
| A. | Aluminium |
| B. | Silver |
| C. | Iron |
| D. | Zinc |
| Answer» B. Silver | |