MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Pb and Sn are extracted from their chief ore by [IIT-JEE Screening 2004] |
| A. | Carbon reduction and self-reduction. |
| B. | Self reduction and carbon reduction. |
| C. | Electrolysis and self-reduction. |
| D. | Self-reduction and electrolysis. |
| Answer» C. Electrolysis and self-reduction. | |
| 2. |
Which process of reduction of mineral to the metal is suited for the extraction of copper from its ores with low copper content |
| A. | Metal displacement |
| B. | Auto reduction |
| C. | Chemical reduction |
| D. | Electrolytic reduction |
| Answer» C. Chemical reduction | |
| 3. |
Wolframite ore is separated from tinstone ore by the process of [BHU 2004] |
| A. | Roasting |
| B. | Electromagnetic |
| C. | Smelting |
| D. | Calcination |
| Answer» C. Smelting | |
| 4. |
Magnetic separation is used for increasing concentration of the following [MP PET 1990] |
| A. | Horn silver |
| B. | Calcite |
| C. | Haematite |
| D. | Magnesite |
| Answer» D. Magnesite | |