Given the Data in the Accompanying Table,which of the Chemicals

question 37

Multiple Choice

Given the data in the accompanying table,which of the chemicals is the most toxic

$\begin{array}{|l|l|}\hline \text { Chemical } & \mathrm{LD}_{50}(\mathrm{mg} \mathrm{kg}) \text { administered or ally to rats } \\\hline \text { Nicotine } & 2.0 \\\hline \text { Cocaine } & 17.5 \\\hline \text { Heroin } & 150.0 \\\hline \text { Caffeine } & 200.0 \\\hline \text { Morphine } & 500.0\\\hline\end{array}$

• A)nicotine
• B)heroin
• C)morphine
• D)caffeine

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