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

Question

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

Quizplus · Accepted Answer

The LD50 value for nicotine is the lowest among all the given chemicals, indicating that it is the most toxic. LD50 is the lethal dose required to kill 50% of the tested animal population. Therefore, the lower the LD50 value, the more toxic the chemical is. In this case, nicotine has an LD50 of 2 mg/kg, which means that a dose of 2 mg of nicotine per kg of body weight is required to kill 50% of rats when administered orally or ally. On the other hand, caffeine has an LD50 of 200 mg/kg, which is ten times higher than nicotine, making it less toxic in comparison. Hence, the correct answer is A) nicotine.

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