VIRGINIA COMMERCIAL PESTICIDE APPLICATORS
CORE EXAM / STUDY GUIDE LATEST VERSION /
QUESTIONS AND CORRECT ANSWERS / A GRADE
SCORE SOLUTION.
if you transfer a pesticide (concentrate or diluted) into another container, do you have to
label the secondary container? this is the correct answerYES!
what is FIFRA this is the correct answerFederal Insecticide, Fungicide, and
Rodenticide Act of 1947. FIFRA regulates the registration, manufacture, sale,
transportation, and use of pesticides. it specifies how they must be registered and used,
the required training and certification of applicators, and the classification of RUPs
when and why might you use a MSDS for a pesticide product? this is the correct
answerto get technical information about the environmental and human health effects
of a pesticide product. you could also consult an msds to find out how to respond to an
accident or incident
what is a pesticide formulation? this is the correct answerthe mixture of active
ingredient and inert ingredients that forms an end-use pesticide product. a formulated
pesticide will contain both an active ingredient to control the target pest and a carrier or
diluent. many also contain adjuvants and other ingredients such as stabilizers or dyes.
what is the difference between active and inert ingredients? this is the correct
answeractive ingredients are the chemicals that control the pests
, what is the term used to describe a mixture formed by dispersing solid particles in a
liquid? this is the correct answersuspension. suspensions contain fine solid
particles, which do not dissolve in the liquid carrier. these must be agitated to maintain
even particle distribution.
what is the term used for a mixture made by suspending droplets of one liquid in
another? this is the correct answerEmulsion: each ingredient retains its unique
properties and identity. emulsions have a milky appearance. (E or EC)
what is the difference between a solution and a suspension? how can you tell one from
another? this is the correct answera solution is the result of dissolving a substance
into a liquid. homogeneous and can not be filtered out. look clear
a suspension can be filtered and looks opaque
what formulation is a concentrate that may approach 100% a i? this is the correct
answerultra-low volume (ULV) these concentrates are designed to be used as is or
diluted with only a small quantities of solvents
what are aerosols? this is the correct answerformulations that contain one or more
AI and a solvent. most contain a low percentage of AI. the 2 types are ready-to-use and
those designed for smoke or fog generators
what are invert emulsions? this is the correct answerthick mixtures that contain a
water-soluble pesticide dispersed in an oil carrier. these products require a special kind
of emulsifier that allows the pesticide to be mixed with a large volume of petroleum
carrier, usually fuel oil. they are most often used for weed control on rights-of-ways.
name at least one advantage and one disadvantage of dust (D) formulations. this is the
correct answeradv: usually ready to use
dis: easily drift off target
CORE EXAM / STUDY GUIDE LATEST VERSION /
QUESTIONS AND CORRECT ANSWERS / A GRADE
SCORE SOLUTION.
if you transfer a pesticide (concentrate or diluted) into another container, do you have to
label the secondary container? this is the correct answerYES!
what is FIFRA this is the correct answerFederal Insecticide, Fungicide, and
Rodenticide Act of 1947. FIFRA regulates the registration, manufacture, sale,
transportation, and use of pesticides. it specifies how they must be registered and used,
the required training and certification of applicators, and the classification of RUPs
when and why might you use a MSDS for a pesticide product? this is the correct
answerto get technical information about the environmental and human health effects
of a pesticide product. you could also consult an msds to find out how to respond to an
accident or incident
what is a pesticide formulation? this is the correct answerthe mixture of active
ingredient and inert ingredients that forms an end-use pesticide product. a formulated
pesticide will contain both an active ingredient to control the target pest and a carrier or
diluent. many also contain adjuvants and other ingredients such as stabilizers or dyes.
what is the difference between active and inert ingredients? this is the correct
answeractive ingredients are the chemicals that control the pests
, what is the term used to describe a mixture formed by dispersing solid particles in a
liquid? this is the correct answersuspension. suspensions contain fine solid
particles, which do not dissolve in the liquid carrier. these must be agitated to maintain
even particle distribution.
what is the term used for a mixture made by suspending droplets of one liquid in
another? this is the correct answerEmulsion: each ingredient retains its unique
properties and identity. emulsions have a milky appearance. (E or EC)
what is the difference between a solution and a suspension? how can you tell one from
another? this is the correct answera solution is the result of dissolving a substance
into a liquid. homogeneous and can not be filtered out. look clear
a suspension can be filtered and looks opaque
what formulation is a concentrate that may approach 100% a i? this is the correct
answerultra-low volume (ULV) these concentrates are designed to be used as is or
diluted with only a small quantities of solvents
what are aerosols? this is the correct answerformulations that contain one or more
AI and a solvent. most contain a low percentage of AI. the 2 types are ready-to-use and
those designed for smoke or fog generators
what are invert emulsions? this is the correct answerthick mixtures that contain a
water-soluble pesticide dispersed in an oil carrier. these products require a special kind
of emulsifier that allows the pesticide to be mixed with a large volume of petroleum
carrier, usually fuel oil. they are most often used for weed control on rights-of-ways.
name at least one advantage and one disadvantage of dust (D) formulations. this is the
correct answeradv: usually ready to use
dis: easily drift off target
