VA PESTICIDE EXAM
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Adjuvant - ANSWER Substance added to a pesticide formulation to
increase it effectiveness or safety ex. emulsifier or wetting agent
2. Adsorption - ANSWER Process of adhesion; coating a particle or binding
something to a surface
3. Alkaline - ANSWER Opposite of acidic pH greater than 7
4. Carrier - ANSWER Primary material used to allow a pesticide to be
dispersed effectively, ex. talc in a dust formulation, water in wetable
powder, etc.
5. Conductivity - ANSWER A measure of waters ability to conduct
electricity. Dissolved substances ex. soluble salts, increase conductivity of
water.
6. Dilute - ANSWER make less concentrated
,7. Formulation - ANSWER Pesticide product as sold usually a mixture of
active and inert ingredients that forms an end use pesticide product.
8. Incompatible - ANSWER Combination of ingredients not usable, stable,
safe or effective
9. Insoluble - ANSWER does not dissolve in a liquid
10.Microbe - ANSWER Organism that cannot be seen without aid of
microscope
11.Mixture - ANSWER Two or more substances not chemically bound to
one another. May be uniform and homogeneous (dilute solution of
saltwater) or nonuniform and heterogeneous (a bag of m and ms)
12.Petroleum Based - ANSWER Made from petroleum products (xyelene,
refined oil, kerosnes)
13.Phytotoxicity - ANSWER Injury or damage to a sensitive plant cause by
chemical exposure
14.Precipitate - ANSWER An insoluble solid substance that forms because
of a chemical change. Precipitation is formation of a solid in a solution
resulting from a chemical reaction
, 15.Solvent - ANSWER Liquid that will dissolve a substance and form a true
solution
16.Surfactant - ANSWER Surface Acting ingredient that alters the
dispersing, spreading or wetting properties of spray droplets. Type of
adjuvant most common.
Anionic surfactant- negative charge used with pesticide contact
Cationic- positive charge and are phytotoxic
Nonionic- no electric charge. used with systemic products to help sprays penetrate
plants
17. Turbidity - ANSWER Measure of water cloudiness caused by suspended
particles, often appears brown or muddy
18. Volatile - ANSWER Evaporating rapidly, turning easily into gas/Vapor
19. Inert Ingredients - ANSWER Added to improve effectiveness, make end
use product safer, make easier to dissolve, or serve as diluents or carriers
while others are adjuvants
20. Liquid Pesticide Products - ANSWER Usually one of the Following:
Solution
Suspension
Emulsion
, 21. Suspension - ANSWER Form of mixture formed by dispersing very fine
solid particles into a liquid. Solid particles do not dissolve in the liquid
carrier and must be agitated to maintain even particle distribution. Most
are cloudy. Not water Soluble and tank must have agitation capacity. ex.
flour and water.
22.Emulsion - ANSWER Mixture of two or more liquids that are not soluble
in one another. One is suspended as small droplets in the other and each
retain its identity and properties. Agitation may be necessary to prevent
separation. Type of Suspension. Milky Appearance
23. Concentrates - ANSWER Both liquid and solid form;
-Emulsifiable concentrate (E or EC0 is a liquid concentrate (LC)
- Wettable powders (WP), Soluble Powders(SP), and water dispersed granuals are
solid concentrated materials
23. Emulsifiable Concentrates (EC or E) - ANSWER Usually contains an oil
soluble liquid active ingredient, one or more petroleum based solvent, and
a mixing agent. Agent allows formation to be mixed with water to form an
emulsion. EC's among the most versatile formulation managing a wide
variety of pest types and adaptable to many types of application
equipments
24. Emulisifiable Concentrates Advantages - ANSWER -Relatively easy to
handle, transport, pour, and measure
-Little agitation required
Comprehensive Resource To Help You Ace 2026-2027
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1. Adjuvant - ANSWER Substance added to a pesticide formulation to
increase it effectiveness or safety ex. emulsifier or wetting agent
2. Adsorption - ANSWER Process of adhesion; coating a particle or binding
something to a surface
3. Alkaline - ANSWER Opposite of acidic pH greater than 7
4. Carrier - ANSWER Primary material used to allow a pesticide to be
dispersed effectively, ex. talc in a dust formulation, water in wetable
powder, etc.
5. Conductivity - ANSWER A measure of waters ability to conduct
electricity. Dissolved substances ex. soluble salts, increase conductivity of
water.
6. Dilute - ANSWER make less concentrated
,7. Formulation - ANSWER Pesticide product as sold usually a mixture of
active and inert ingredients that forms an end use pesticide product.
8. Incompatible - ANSWER Combination of ingredients not usable, stable,
safe or effective
9. Insoluble - ANSWER does not dissolve in a liquid
10.Microbe - ANSWER Organism that cannot be seen without aid of
microscope
11.Mixture - ANSWER Two or more substances not chemically bound to
one another. May be uniform and homogeneous (dilute solution of
saltwater) or nonuniform and heterogeneous (a bag of m and ms)
12.Petroleum Based - ANSWER Made from petroleum products (xyelene,
refined oil, kerosnes)
13.Phytotoxicity - ANSWER Injury or damage to a sensitive plant cause by
chemical exposure
14.Precipitate - ANSWER An insoluble solid substance that forms because
of a chemical change. Precipitation is formation of a solid in a solution
resulting from a chemical reaction
, 15.Solvent - ANSWER Liquid that will dissolve a substance and form a true
solution
16.Surfactant - ANSWER Surface Acting ingredient that alters the
dispersing, spreading or wetting properties of spray droplets. Type of
adjuvant most common.
Anionic surfactant- negative charge used with pesticide contact
Cationic- positive charge and are phytotoxic
Nonionic- no electric charge. used with systemic products to help sprays penetrate
plants
17. Turbidity - ANSWER Measure of water cloudiness caused by suspended
particles, often appears brown or muddy
18. Volatile - ANSWER Evaporating rapidly, turning easily into gas/Vapor
19. Inert Ingredients - ANSWER Added to improve effectiveness, make end
use product safer, make easier to dissolve, or serve as diluents or carriers
while others are adjuvants
20. Liquid Pesticide Products - ANSWER Usually one of the Following:
Solution
Suspension
Emulsion
, 21. Suspension - ANSWER Form of mixture formed by dispersing very fine
solid particles into a liquid. Solid particles do not dissolve in the liquid
carrier and must be agitated to maintain even particle distribution. Most
are cloudy. Not water Soluble and tank must have agitation capacity. ex.
flour and water.
22.Emulsion - ANSWER Mixture of two or more liquids that are not soluble
in one another. One is suspended as small droplets in the other and each
retain its identity and properties. Agitation may be necessary to prevent
separation. Type of Suspension. Milky Appearance
23. Concentrates - ANSWER Both liquid and solid form;
-Emulsifiable concentrate (E or EC0 is a liquid concentrate (LC)
- Wettable powders (WP), Soluble Powders(SP), and water dispersed granuals are
solid concentrated materials
23. Emulsifiable Concentrates (EC or E) - ANSWER Usually contains an oil
soluble liquid active ingredient, one or more petroleum based solvent, and
a mixing agent. Agent allows formation to be mixed with water to form an
emulsion. EC's among the most versatile formulation managing a wide
variety of pest types and adaptable to many types of application
equipments
24. Emulisifiable Concentrates Advantages - ANSWER -Relatively easy to
handle, transport, pour, and measure
-Little agitation required
