Washington Pesticide Laws and Safety
Test, Practice Exam Questions and
Answers Graded A+
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
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,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
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,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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, 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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Test, Practice Exam Questions and
Answers Graded A+
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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, 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
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
