MCQOPTIONS
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MCQOPTIONS
| 1. |
Which of the following gives black color to glass? |
| A. | MnO |
| B. | CdS |
| C. | Sb<sub>2</sub>S<sub>3</sub> |
| D. | Co<sub>3</sub>O<sub>4</sub> |
| Answer» E. | |