True or False: A smaller LD50 value indicates that less chemical is required to be fatal, making the pesticide more poisonous.

True or False: A smaller LD50 value indicates that less chemical is required to be fatal, making the pesticide more poisonous.

• A. True
• B. False
• C. Depends on the type of pesticide
• D. None of the above

Answer: (A)

A smaller LD50 value indeed indicates that less of a chemical is needed to cause death in 50% of a test population, which signifies a higher level of toxicity. The measure of LD50, or lethal dose for 50% of the population, is commonly used to compare the poisonous effects of various substances, including pesticides. When the LD50 value is smaller, it reflects that the chemical is more potent and poses a greater risk to organisms, including humans and wildlife. In the context of pesticides, a lower LD50 means that less of the pesticide is necessary to achieve a lethal effect, highlighting its hazardous nature. Therefore, the statement is true because it correctly correlates the size of the LD50 value with the toxicity of the chemical.

A smaller LD50 value indeed indicates that less of a chemical is needed to cause death in 50% of a test population, which signifies a higher level of toxicity. The measure of LD50, or lethal dose for 50% of the population, is commonly used to compare the poisonous effects of various substances, including pesticides.

When the LD50 value is smaller, it reflects that the chemical is more potent and poses a greater risk to organisms, including humans and wildlife. In the context of pesticides, a lower LD50 means that less of the pesticide is necessary to achieve a lethal effect, highlighting its hazardous nature. Therefore, the statement is true because it correctly correlates the size of the LD50 value with the toxicity of the chemical.