Update 2025-2026 Exam 300 Questions with
100% Verified Correct Answers Guaranteed A+
"Operational Guidelines" is a catch all category for what? - CORRECT ANSWER: Spray
system features that you can manipulate to manage the size of spray droplets,
including:
-Rotation rate of rotary atomizers
-Positioning of a CP nozzles deflector
-Orientation of check valves on a spray boom
-Cross sectional shape of a spray boom
75 WP indicates what about this pesticide product? - CORRECT ANSWER: 75WP
indicates that 75% of the wettable powder product by weight is active ingredient.
90 SP indicates what about this pesticide product? - CORRECT ANSWER: 90 SP
indicates that 90% of the soluble powder by weight is active ingredient.
A basic DGPS component set consists of what? - CORRECT ANSWER: -A lightbar
-A DGPS mobile receiver
-A DGPS antenna
A centrifugal spreader is generally used with what type of aircraft? - CORRECT
ANSWER: A rotorcraft (helicopter)
A D8 disc core nozzle means that it has an orifice diameter of what? - CORRECT
ANSWER: 8/64 inches
,A disc core nozzle is designated by what two factors? - CORRECT ANSWER: -The size
of its disc orifice
-The size of its core
A disc core nozzle with a higher number indicates what? - CORRECT ANSWER: That it
either has more holes or bigger holes than a core with a smaller number.
A disc core orifice is measured in what fraction of an inch? - CORRECT ANSWER: 1/64
inches
A HIGH LD50 means that a pesticide is what? - CORRECT ANSWER: Only slightly toxic
A large increase in spray pressure will substantially increase what? - CORRECT
ANSWER: The number of small droplets generated
A liquid formulation with the name "Nu-Stuff 3.2 EC" indicates what information about
the product? - CORRECT ANSWER: -That it is an emulsifiable concentrate
-That the product contains 3.2 pounds of active ingredient per gallon
A liquid formulation with the name "wet-stuff 90SL" indicates what information about the
product? - CORRECT ANSWER: -It is a soluble liquid
-That 90% of the total net weight of the product is active ingredient.
A LOW LD50 means that a pesticide is what? - CORRECT ANSWER: HIGHLY toxic
A service crew member is considered_________ until a spray rig/parts are cleaned and
rinsate is managed? - CORRECT ANSWER: A pesticide handler
A surfactant is an example of what variety of spray additive? - CORRECT ANSWER:
Adjuvant
,A typical aerial spray system consists of the following: - CORRECT ANSWER: -Tank
-Agitation system
-Filters
-Piping and fittings
-Pump and pressure gauges
-Spray boom
Adding a surfactant will do what to the characteristics of a spray mix? - CORRECT
ANSWER: -Change the proportion of the spray emitted as a particular droplet size
-Change the total spray droplet spectrum produced by the nozzle tip
Adjusting the rear vane sections of a ram air spreader allows for what kind of
adjustments? - CORRECT ANSWER: Rear vane changes allow for fine tuning overall
pattern uniformity.
Adjusting what (term) is the best way to make large changes in the boom output rate of
an aircraft? - CORRECT ANSWER: "Nozzling"
Aerial application equipment is calibrated according to what metric? - CORRECT
ANSWER: APM or Acres per minute
An Invert Emulsion is? - CORRECT ANSWER: A water soluble substance suspended in
an oil diluent and oil carrier.
Another term for settling velocity is? - CORRECT ANSWER: Fall Rate
Application height is the distance between what two things? - CORRECT ANSWER:
nozzle tip/spreader exit
, plant canopy
Are formula amounts that are mixed based on "amount of pesticide product" different
than those based on "amount of active ingredient"? - CORRECT ANSWER: YES, there
IS a difference! For the first, you simply weigh or measure out the amount of total
product, for active ingredient, you need to figure out how much active ingredient there is
per volume or weight unit.
Are whirl chamber nozzles typically prone to clogging? - CORRECT ANSWER: No, whirl
chamber nozzles are relatively free from clogging problems.
At the minimum, an agricultural aircraft must be able to do what? - CORRECT
ANSWER: -Safely life and transport its cargo
-Disperse a pesticide accurately and safely at the target site without harming adjacent
land or life
At what pressure to diaphragm check valves generally seal? - CORRECT ANSWER: 7
psi
At what rate does maritime DGPS accuracy decay at? - CORRECT ANSWER: For
receivers more than 100 miles away from a maritime DGPS station, accuracy decays at
a rate of 1 meter/150km, or 1 yard/90 miles.
Can you legally apply a pesticide to a site not mentioned on a label if you are targeting a
pest permitted by the label? - CORRECT ANSWER: NO, because the target site is what
determines legal use of a product.
Cholinesterase is essential for what in the body? - CORRECT ANSWER: Regulation of
nerve impulses
Common symptoms of external exposure to pesticides may include? - CORRECT
ANSWER: -Blisters, rash, and or burns