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Concentration of a material which is lethal to 50 animal is...

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Chemistry
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Concentration of a material which is lethal to 50% animal is called

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Correct Answer: Option A
LD stands for "Lethal Dose". LD50 is the amount of a material, given all at once, which causes the death of 50% (one half) of a group of test animals. The LD50 is one way to measure the short-term poisoning potential (acute toxicity) of a material.
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