MCQOPTIONS
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| 1. |
Which of the following metals can be extracted from its ore by both pyrometallur-gical as well as hydrometallurgical methods ? |
| A. | Copper |
| B. | Zinc |
| C. | both 'a' & 'b' |
| D. | neither 'a' nor 'b' |
| Answer» D. neither 'a' nor 'b' | |