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| Q. |
Threshold limit value of copper in the atmospheric air is - |
| A. | 0.001 mg/m3 |
| B. | 0.01 mg/m3 |
| C. | 1.0 mg/m3 |
| D. | 5.0 mg/m3 |
| Answer» C. 1.0 mg/m3 | |
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Explanation: Inspirable copper dust takes a predominantly fibrous effect. The ALV of copper aerosol in the workplace atmosphere is 0.5 mg/m3, while the threshold limit value (TLV) is 1.0 mg/m3. |
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