MCQOPTIONS
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| 1. |
Inhalation of silica dust by human being during hand drilling in mica mining, lead & zinc mining, silica refractory manufacture and in foundaries causes |
| A. | Asphyxiation (suffocation) |
| B. | Shortness of breath |
| C. | Tuberculosis |
| D. | All of the above |
| Answer» E. | |