McqMate
| Q. |
Concentration of a material which is lethal to 50% animal is called– |
| A. | LD50 |
| B. | LC50 |
| C. | NOAEL |
| D. | ADI |
| Answer» A. LD50 | |
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Explanation: LD50 (Lethal Dose 50) is the amount of a solid or liquid material that it takes to kill 50% of test animals (for example, mice or rats) in one dose. LD50 is one way to measure the short-term poisoning potential (acute toxicity) of a material. LC50 is the concentration of a material in air that will kill 50% of the test subjects when administered as a single exposure. |
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