1
Washington Pesticide Laws And
Safety Test, Practice Exam Questions
And Verified Solutions 2026
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:
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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
,3
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
, 4
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
Washington Pesticide Laws And
Safety Test, Practice Exam Questions
And Verified Solutions 2026
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:
,2
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
,3
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
, 4
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
