MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
Polysulphones contain the _______ group. |
| A. | tS |
| B. | tCO |
| C. | tSO<sub>2</sub> |
| D. | tSO<sub>4</sub> |
| Answer» D. tSO<sub>4</sub> | |