BARBICIDE CERTIFICATION TEST SCRIPT 2026
QUESTIONS WITH FULL ANSWERS GRADED A+
◉ Which of these formulations forms a suspension that requires
constant agitation when mixed with water?
A - Ready to Use formulation (RTU)
B - Soluble Powder (WSP)
C - Solution (S)
D - Wettable Powder (W or WP). Answer: D - Wettable powders (W
or WP) - a dry pesticide formulation in powder form
◉ Which is a disadvantage of both EC and concentrate formulations?
A - Solvents may cause rubber or plastic hoses, gaskets, and pump
parts and surfaces to deteriorate
B - Contribute to abrasive wear of nozzles and pumps
C - Require constant agitation to keep in suspension
D - Difficult to handle, transport, and store. Answer: A - Solvents may
cause rubber or plastic hoses, gaskets, and pump parts and surfaces
to deteriorate (Ch 5)
◉ Which dry/solid formulation is mixed in water and reduces the
risk of inhalation exposure during mixing and loading?
A - Dusts (D)
,B - Wettable Powders (W or WP)
C - Soluble powders (SP)
D - Water-dispersible granule (WDG) or dry flowables (DF). Answer:
D - Water dispersible granules (WDG) or dry flowables (DF) -
Chapter 5
◉ Which type of dry/solid pesticide formulation consists of particles
that are the same weight and shape?
A - Dusts (D)
B - Granules (G)
C - Pellets (P)
D - Baits (B). Answer: C - Pellets (P) (Chapter 5)
◉ Which is an advantage of microencapsulated materials?
A - They pose few hazards to bees
B - Delayed or slow release of the active ingredient prolongs their
effectiveness
C - Their pesticidal activity is independent of weather conditions
D - They usually require only a short restricted entry interval..
Answer: B - Delayed or slow release of the active ingredient prolongs
their effectiveness (Chapter 5)
◉ Which types of adjuvant function as wetting agents and spreaders
(by physically altering the surface tension of spray droplets)?
,A - Surfactants
B - Stickers
C - Extenders
D - Buffers. Answer: A - surfactants (chapter 5)
◉ What characteristic of a pesticide makes it likely to move with
water in surface runoff? High: solubility, adsorption, volatility.
Answer: High solubility (Chapter 6)
◉ Which of these may be a cause of non-point source pollution?
A-Back-siphoning of pesticide spills at a wellhead
B-Leaching from a pesticide-mixing area
C-Pesticides that dissolve & leach through soil after rain
D- Dumping leftover pesticides down a well. Answer: Pesticides that
dissolve & leach through the soil after a rainfall. (Ch 6)
◉ Which of the soil type is most likely to experience leaching?
A-Heavy clay soil, low organic matter, shallow groundwater
B-Heavy clay soil, high organic matter, deep groundwater
C-Sandy soil, high organic matter, deep groundwater
D- Sandy soil, low organic matter, shallow groundwater. Answer: D-
Sandy soil, low in organic matter, where ground water is shallow. (Ch
6)
, ◉ What two factors are most important in reducing spray drift?
A- droplet size & wind conditions
B- Temperature & wind conditions
C- Viscosity of liquid pesticides and air turbulence
D- Temperature and pesticide volatility. Answer: A-Droplet size and
wind conditions (Ch 6)
◉ What two factors are most important in relation to vapor drift?
A- Droplet size and wind direction & speed
B- Air stability & temperature
C- Viscosity of liquid pesticides & air turbulence
D- Temperature & pesticide volatility. Answer: D-Temperature and
pesticide volatility(Ch 6)
◉ Which statement is true about protecting bees from pesticide
injury?
A- wettable powders are the safest formulation for preventing bee
injury
B- It's best to spray crops when they are in bloom
C- Aerial applications are less hazardous to bees than ground
applications
QUESTIONS WITH FULL ANSWERS GRADED A+
◉ Which of these formulations forms a suspension that requires
constant agitation when mixed with water?
A - Ready to Use formulation (RTU)
B - Soluble Powder (WSP)
C - Solution (S)
D - Wettable Powder (W or WP). Answer: D - Wettable powders (W
or WP) - a dry pesticide formulation in powder form
◉ Which is a disadvantage of both EC and concentrate formulations?
A - Solvents may cause rubber or plastic hoses, gaskets, and pump
parts and surfaces to deteriorate
B - Contribute to abrasive wear of nozzles and pumps
C - Require constant agitation to keep in suspension
D - Difficult to handle, transport, and store. Answer: A - Solvents may
cause rubber or plastic hoses, gaskets, and pump parts and surfaces
to deteriorate (Ch 5)
◉ Which dry/solid formulation is mixed in water and reduces the
risk of inhalation exposure during mixing and loading?
A - Dusts (D)
,B - Wettable Powders (W or WP)
C - Soluble powders (SP)
D - Water-dispersible granule (WDG) or dry flowables (DF). Answer:
D - Water dispersible granules (WDG) or dry flowables (DF) -
Chapter 5
◉ Which type of dry/solid pesticide formulation consists of particles
that are the same weight and shape?
A - Dusts (D)
B - Granules (G)
C - Pellets (P)
D - Baits (B). Answer: C - Pellets (P) (Chapter 5)
◉ Which is an advantage of microencapsulated materials?
A - They pose few hazards to bees
B - Delayed or slow release of the active ingredient prolongs their
effectiveness
C - Their pesticidal activity is independent of weather conditions
D - They usually require only a short restricted entry interval..
Answer: B - Delayed or slow release of the active ingredient prolongs
their effectiveness (Chapter 5)
◉ Which types of adjuvant function as wetting agents and spreaders
(by physically altering the surface tension of spray droplets)?
,A - Surfactants
B - Stickers
C - Extenders
D - Buffers. Answer: A - surfactants (chapter 5)
◉ What characteristic of a pesticide makes it likely to move with
water in surface runoff? High: solubility, adsorption, volatility.
Answer: High solubility (Chapter 6)
◉ Which of these may be a cause of non-point source pollution?
A-Back-siphoning of pesticide spills at a wellhead
B-Leaching from a pesticide-mixing area
C-Pesticides that dissolve & leach through soil after rain
D- Dumping leftover pesticides down a well. Answer: Pesticides that
dissolve & leach through the soil after a rainfall. (Ch 6)
◉ Which of the soil type is most likely to experience leaching?
A-Heavy clay soil, low organic matter, shallow groundwater
B-Heavy clay soil, high organic matter, deep groundwater
C-Sandy soil, high organic matter, deep groundwater
D- Sandy soil, low organic matter, shallow groundwater. Answer: D-
Sandy soil, low in organic matter, where ground water is shallow. (Ch
6)
, ◉ What two factors are most important in reducing spray drift?
A- droplet size & wind conditions
B- Temperature & wind conditions
C- Viscosity of liquid pesticides and air turbulence
D- Temperature and pesticide volatility. Answer: A-Droplet size and
wind conditions (Ch 6)
◉ What two factors are most important in relation to vapor drift?
A- Droplet size and wind direction & speed
B- Air stability & temperature
C- Viscosity of liquid pesticides & air turbulence
D- Temperature & pesticide volatility. Answer: D-Temperature and
pesticide volatility(Ch 6)
◉ Which statement is true about protecting bees from pesticide
injury?
A- wettable powders are the safest formulation for preventing bee
injury
B- It's best to spray crops when they are in bloom
C- Aerial applications are less hazardous to bees than ground
applications
