WASHINGTON PESTICIDE LAWS AND SAFETY TEST
EXAM 2025 QUESTIONS AND CORRECT SOLUTIONS
A key to minimizing the hazard of pesticide use to the applicator is to avoid
exposure (T/F) - Correct Answer-True
The use of temperature or humidity manipulation is a
control
method for insects - Correct Answer-Physical
Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible - Correct Answer-d.
placing a boom as close to the target as possible
Which is not a concern handling a emulsifiable concentrate pesticide:
a. high phytotoxicity
b. may be easily absorbed through human and animal skin
c. flammability
d. easily clogs nozzles and screens - Correct Answer-d. easily
clogs nozzles and screens
,EPA and WSDA are the only federal and state agencies that regulate
pesticides (T/F) - Correct Answer-False
Two or more pesticides that cannot mixed together effectively are
said to be . - Correct Answer-Incompatible
All formations with the same active ingredient carry the same signal
word (T/F) - Correct Answer-False
The skull and crossbones symbol must appear on every pesticide
label (T/F) - Correct Answer-False
The best way to dispose of a registered pesticide is to:
a. pour it into the sewer system
b. dump it in a vacant area
c. use it as direct on the label
d. ship it to the EPA - Correct Answer-c. use it as direct on the label
To minimize the drift when applying a herbicide, the best type of nozzle
to use is:
a. a low pressure, flat fan
,b. off center
c. a high pressure cone
d. makes no difference - Correct Answer-a. a low pressure, flat fan
Which LD50 is a representative of a highly toxic pesticide:
a. 640 mg/kg
b. 5,800 mg/kg
c. 12,840 mg/kg
d. 46 mg/kg - Correct Answer-d. 46 mg/kg
Pesticide-contaminated surface water can contaminate groundwater (T/F) -
Correct Answer-True
Pesticide records are useful only to applicators in case they have
problems with effectiveness (T/F) - Correct Answer-False
If an applicator had two major label violations and was cited by the
WSDA, they could face a maximum fine of $15,000 and lose their
liscence (T/F) - Correct Answer-True
Dealers must keep records for 7 years on the sale of general use
agricultural pesticides (T/F) - Correct Answer-True
, One of the earliest uses of chemicals as pesticides was the burning
of sulfur (T/F) - Correct Answer-True
When the pest reaches the , pest management procedures need to
be applied to prevent the pest from economically damaging populations.
- Correct Answer-Economic threshold
Which of the following is not considered a mechanical control method:
a. fencing a crop to prevent deer entry
b. netting blueberry bushes to keep birds away
c. releasing a parasitic wasp
d. washing of aphids with a stream of water
e. removing a rhododendron with a root disease - Correct
Answer-c. releasing a parasitic wasp
Which Of The Following Is A Cultural Control Method:
a. Fertilization
b. Planting Time
c. Pruning
d. Crop Rotation
e. All Of The Above - Correct Answer-E. All Of The Above
EXAM 2025 QUESTIONS AND CORRECT SOLUTIONS
A key to minimizing the hazard of pesticide use to the applicator is to avoid
exposure (T/F) - Correct Answer-True
The use of temperature or humidity manipulation is a
control
method for insects - Correct Answer-Physical
Drift problems can be reduced by:
a. using lower pressure, smaller nozzle orifices
b. applying in very calm, stable air conditions
c. spraying upwind of a sensitive area
d. placing bloom as close to target as possible - Correct Answer-d.
placing a boom as close to the target as possible
Which is not a concern handling a emulsifiable concentrate pesticide:
a. high phytotoxicity
b. may be easily absorbed through human and animal skin
c. flammability
d. easily clogs nozzles and screens - Correct Answer-d. easily
clogs nozzles and screens
,EPA and WSDA are the only federal and state agencies that regulate
pesticides (T/F) - Correct Answer-False
Two or more pesticides that cannot mixed together effectively are
said to be . - Correct Answer-Incompatible
All formations with the same active ingredient carry the same signal
word (T/F) - Correct Answer-False
The skull and crossbones symbol must appear on every pesticide
label (T/F) - Correct Answer-False
The best way to dispose of a registered pesticide is to:
a. pour it into the sewer system
b. dump it in a vacant area
c. use it as direct on the label
d. ship it to the EPA - Correct Answer-c. use it as direct on the label
To minimize the drift when applying a herbicide, the best type of nozzle
to use is:
a. a low pressure, flat fan
,b. off center
c. a high pressure cone
d. makes no difference - Correct Answer-a. a low pressure, flat fan
Which LD50 is a representative of a highly toxic pesticide:
a. 640 mg/kg
b. 5,800 mg/kg
c. 12,840 mg/kg
d. 46 mg/kg - Correct Answer-d. 46 mg/kg
Pesticide-contaminated surface water can contaminate groundwater (T/F) -
Correct Answer-True
Pesticide records are useful only to applicators in case they have
problems with effectiveness (T/F) - Correct Answer-False
If an applicator had two major label violations and was cited by the
WSDA, they could face a maximum fine of $15,000 and lose their
liscence (T/F) - Correct Answer-True
Dealers must keep records for 7 years on the sale of general use
agricultural pesticides (T/F) - Correct Answer-True
, One of the earliest uses of chemicals as pesticides was the burning
of sulfur (T/F) - Correct Answer-True
When the pest reaches the , pest management procedures need to
be applied to prevent the pest from economically damaging populations.
- Correct Answer-Economic threshold
Which of the following is not considered a mechanical control method:
a. fencing a crop to prevent deer entry
b. netting blueberry bushes to keep birds away
c. releasing a parasitic wasp
d. washing of aphids with a stream of water
e. removing a rhododendron with a root disease - Correct
Answer-c. releasing a parasitic wasp
Which Of The Following Is A Cultural Control Method:
a. Fertilization
b. Planting Time
c. Pruning
d. Crop Rotation
e. All Of The Above - Correct Answer-E. All Of The Above
