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| Q. |
According to the CPCB, the diameter of particles that are responsible for carrying great harm to human health is |
| A. | 2.5 micrometer |
| B. | 5.0 micrometer |
| C. | 10.0 micrometer |
| D. | 7.5 micrometer |
| Answer» A. 2.5 micrometer | |
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