Question : The concentration of material which is lethal to 50% of animals is called:
Option 1: LD50
Option 2: LC50
Option 3: NO AEL
Option 4: ADI
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Correct Answer: LD 50
Solution : The correct option is LD 50 .
LD 50 is a measure of a substance's acute toxicity, defined as the amount of the substance that causes death in 50% of a group of test animals. Similarly, LC 50 is the concentration of a chemical in air or water that will kill 50% of test animals in a single exposure.
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