MCQOPTIONS
Saved Bookmarks
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 metal is extracted from Cinnabar? |
| A. | Zinc |
| B. | Copper |
| C. | Iron |
| D. | Mercury |
| Answer» E. | |
| 2. |
Silver is extracted from which of the following ore? |
| A. | Calamine |
| B. | Cinnabar |
| C. | Argentite |
| D. | Malachite |
| Answer» D. Malachite | |
| 3. |
The composition of bronze is generally 82 percent copper and 18 percent tin. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
What is the concentration of zinc in calamine? |
| A. | 98 percent |
| B. | 94 percent |
| C. | 86 percent |
| D. | 74 percent |
| Answer» B. 94 percent | |
| 5. |
Malachite is an ore of copper with 58 percent copper concentration. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of the following is not a suitable ore for extracting iron? |
| A. | Hematite |
| B. | Magnetite |
| C. | Siderite |
| D. | Iron Pyrites |
| Answer» E. | |
| 7. |
What is the composition of brass? |
| A. | 49 percent copper and 51 percent zinc |
| B. | 50 percent copper and 50 percent zinc |
| C. | 37 percent copper and 63 percent zinc |
| D. | 63 percent copper and 37 percent zinc |
| Answer» E. | |
| 8. |
What is the composition of Kaolinite? |
| A. | Fe<sub>2</sub>O<sub>3</sub> |
| B. | Al<sub>2</sub>O<sub>3</sub>.2H<sub>2</sub>O |
| C. | [Al<sub>2</sub>(OH)<sub>4</sub>Si<sub>2</sub>O<sub>4</sub>] |
| D. | CuFeS<sub>2</sub> |
| Answer» D. CuFeS<sub>2</sub> | |
| 9. |
Which of the following is the finest iron ore? |
| A. | Hematite |
| B. | Magnetite |
| C. | Siderite |
| D. | Iron Pyrites |
| Answer» C. Siderite | |
| 10. |
Which of the following is the chief ore of aluminium? |
| A. | Kaolinite |
| B. | Bauxite |
| C. | Malachite |
| D. | Cinnabar |
| Answer» C. Malachite | |