1.

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

Answer»

 LD50



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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