Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
**Question 1.** Which federal act primarily governs the registration, distribution,
and use of pesticide products in the United States?
A) Clean Water Act
B) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C) Toxic Substances Control Act
D) Endangered Species Act
Answer: B
Explanation: FIFRA establishes the legal framework for pesticide registration,
labeling, and usage standards.
**Question 2.** In Idaho, which agency is responsible for issuing pesticide
applicator licenses and enforcing the Idaho Pesticide and Chemigation Law?
A) Idaho Department of Agriculture (IDA)
B) Idaho State Department of Health (ISDH)
C) Idaho State Department of Agriculture (ISDA)
D) Idaho Water Resources Board
Answer: C
Explanation: The ISDA administers licensing, compliance, and enforcement of
state pesticide regulations.
**Question 3.** The Worker Protection Standard (WPS) requires pesticide
handlers to wear which of the following when applying a restricted-use pesticide?
A) Only safety glasses
B) Full-body chemical-resistant suit, gloves, and respiratory protection as
indicated on the label
,Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
C) Any type of work boots
D) No personal protective equipment if the pesticide is labeled “low toxicity”
Answer: B
Explanation: WPS mandates PPE based on label instructions to protect workers
from exposure.
**Question 4.** How long must an applicator retain records of restricted-use
pesticide applications in Idaho?
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C
Explanation: Idaho law requires RUP application records to be kept for at least
three years.
**Question 5.** On a pesticide label, the “Signal Word” that indicates the highest
level of toxicity is:
A) CAUTION
B) WARNING
C) DANGER
D) DANGER-POISON
Answer: D
Explanation: “DANGER-POISON” is reserved for the most hazardous products.
,Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
**Question 6.** Which part of the label provides the EPA registration number?
A) Brand name line
B) Ingredient statement
C) Registration number line (e.g., EPA Reg. No. 12345-678)
D) Manufacturer address
Answer: C
Explanation: The EPA registration number uniquely identifies the product’s
registration.
**Question 7.** A pesticide label states “Apply only to the top 2 inches of soil.”
This instruction belongs to which label section?
A) Signal Word
B) Precautionary Statements
C) Directions for Use – Site-Specific Application Instructions
D) Storage and Disposal
Answer: C
Explanation: Site-specific instructions detail how and where to apply the product.
**Question 8.** LD50 is a measure of:
A) The dose that kills 50 % of a test population
B) The concentration that kills 50 % of fish in 96 hours
C) The time required for 50 % degradation in soil
D) The amount of pesticide that evaporates in 50 minutes
, Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
Answer: A
Explanation: LD50 (lethal dose, 50 %) quantifies acute toxicity to mammals.
**Question 9.** Which route of exposure is most likely when a spray drift lands
on a worker’s uncovered skin?
A) Inhalation
B) Dermal
C) Oral
D) Ocular
Answer: B
Explanation: Direct contact with pesticide on skin is dermal exposure.
**Question 10.** When selecting gloves for pesticide handling, which factor is
most critical?
A) Color of the glove
B) Thickness only
C) Compatibility of glove material with the pesticide’s active ingredient
D) Length of the glove cuff
Answer: C
Explanation: Material compatibility prevents permeation and degradation by the
pesticide.
**Question 11.** The primary antidote for organophosphate poisoning is:
A) Atropine
Herbicide Ultimate Exam
**Question 1.** Which federal act primarily governs the registration, distribution,
and use of pesticide products in the United States?
A) Clean Water Act
B) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C) Toxic Substances Control Act
D) Endangered Species Act
Answer: B
Explanation: FIFRA establishes the legal framework for pesticide registration,
labeling, and usage standards.
**Question 2.** In Idaho, which agency is responsible for issuing pesticide
applicator licenses and enforcing the Idaho Pesticide and Chemigation Law?
A) Idaho Department of Agriculture (IDA)
B) Idaho State Department of Health (ISDH)
C) Idaho State Department of Agriculture (ISDA)
D) Idaho Water Resources Board
Answer: C
Explanation: The ISDA administers licensing, compliance, and enforcement of
state pesticide regulations.
**Question 3.** The Worker Protection Standard (WPS) requires pesticide
handlers to wear which of the following when applying a restricted-use pesticide?
A) Only safety glasses
B) Full-body chemical-resistant suit, gloves, and respiratory protection as
indicated on the label
,Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
C) Any type of work boots
D) No personal protective equipment if the pesticide is labeled “low toxicity”
Answer: B
Explanation: WPS mandates PPE based on label instructions to protect workers
from exposure.
**Question 4.** How long must an applicator retain records of restricted-use
pesticide applications in Idaho?
A) 1 year
B) 2 years
C) 3 years
D) 5 years
Answer: C
Explanation: Idaho law requires RUP application records to be kept for at least
three years.
**Question 5.** On a pesticide label, the “Signal Word” that indicates the highest
level of toxicity is:
A) CAUTION
B) WARNING
C) DANGER
D) DANGER-POISON
Answer: D
Explanation: “DANGER-POISON” is reserved for the most hazardous products.
,Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
**Question 6.** Which part of the label provides the EPA registration number?
A) Brand name line
B) Ingredient statement
C) Registration number line (e.g., EPA Reg. No. 12345-678)
D) Manufacturer address
Answer: C
Explanation: The EPA registration number uniquely identifies the product’s
registration.
**Question 7.** A pesticide label states “Apply only to the top 2 inches of soil.”
This instruction belongs to which label section?
A) Signal Word
B) Precautionary Statements
C) Directions for Use – Site-Specific Application Instructions
D) Storage and Disposal
Answer: C
Explanation: Site-specific instructions detail how and where to apply the product.
**Question 8.** LD50 is a measure of:
A) The dose that kills 50 % of a test population
B) The concentration that kills 50 % of fish in 96 hours
C) The time required for 50 % degradation in soil
D) The amount of pesticide that evaporates in 50 minutes
, Idaho Core Competency and Agriculture
Herbicide Ultimate Exam
Answer: A
Explanation: LD50 (lethal dose, 50 %) quantifies acute toxicity to mammals.
**Question 9.** Which route of exposure is most likely when a spray drift lands
on a worker’s uncovered skin?
A) Inhalation
B) Dermal
C) Oral
D) Ocular
Answer: B
Explanation: Direct contact with pesticide on skin is dermal exposure.
**Question 10.** When selecting gloves for pesticide handling, which factor is
most critical?
A) Color of the glove
B) Thickness only
C) Compatibility of glove material with the pesticide’s active ingredient
D) Length of the glove cuff
Answer: C
Explanation: Material compatibility prevents permeation and degradation by the
pesticide.
**Question 11.** The primary antidote for organophosphate poisoning is:
A) Atropine
