SOIL FUMIGATION EXAM QUESTIONS
AND ANSWERS 100% PASS.
A fumigant's boiling point determines the temperature at which it will turn from a liquid or solid
into a gas
(A) True
(B) False - ANS True
Fumigants can only kill pests if they remain in their liquid or solid form
(A) True
(B) False - ANS False
Soil water blocks the movement of fumigants through the soil
(A) True
(B) False - ANS False
The volatility of soil fumigants means that they can easily escape from the soil if not contained
by tarps, water treatments, or soil incorporation
(A) True
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
, (B) False - ANS True
Methyl bromide - ANS odorless, so people may not know they have been exposed until they
begin to feel the effects such as headache, dizziness, and nausea or vomiting
Chloropicrin - ANS penetrating and offensive odor; irritates eyes at very low concentrations
1,3-D - ANS evaporates easily; may be inhaled in toxic amounts in a closed environment; can
cause severe eye damage, burns, and damage to the lungs, kidneys, liver, and respiratory tract
MITC - ANS strong rotten-egg odor; irritates mucous membranes and causes respiratory
distress
Which of these statements is true about warning agents in fumigant formulations? -
ANS warning agents are required in formulations that have no strong or distinctive odors
warning agents are required in all formulations that have no strong or distinctive odors
warning agents are required in fumigant formulations that have strong or distinctive odors
Which characteristics of soil fumigants have the greatest effect on the fumigants ability to
change from a liquid or solid to a gas? - ANS boiling point and vapor pressure
Sandy soil (effects on fumigants) - ANS its course texture allows fumigants to move through it
more quickly than other types of soil
Silt soil (effects on fumigants) - ANS its fine texture requires higher application rates than any
other soil type
Clay soil (effects on fumigants) - ANS its medium texture retains water between smaller pore
spaces, which can block fumigant movement through the soil
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
AND ANSWERS 100% PASS.
A fumigant's boiling point determines the temperature at which it will turn from a liquid or solid
into a gas
(A) True
(B) False - ANS True
Fumigants can only kill pests if they remain in their liquid or solid form
(A) True
(B) False - ANS False
Soil water blocks the movement of fumigants through the soil
(A) True
(B) False - ANS False
The volatility of soil fumigants means that they can easily escape from the soil if not contained
by tarps, water treatments, or soil incorporation
(A) True
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
, (B) False - ANS True
Methyl bromide - ANS odorless, so people may not know they have been exposed until they
begin to feel the effects such as headache, dizziness, and nausea or vomiting
Chloropicrin - ANS penetrating and offensive odor; irritates eyes at very low concentrations
1,3-D - ANS evaporates easily; may be inhaled in toxic amounts in a closed environment; can
cause severe eye damage, burns, and damage to the lungs, kidneys, liver, and respiratory tract
MITC - ANS strong rotten-egg odor; irritates mucous membranes and causes respiratory
distress
Which of these statements is true about warning agents in fumigant formulations? -
ANS warning agents are required in formulations that have no strong or distinctive odors
warning agents are required in all formulations that have no strong or distinctive odors
warning agents are required in fumigant formulations that have strong or distinctive odors
Which characteristics of soil fumigants have the greatest effect on the fumigants ability to
change from a liquid or solid to a gas? - ANS boiling point and vapor pressure
Sandy soil (effects on fumigants) - ANS its course texture allows fumigants to move through it
more quickly than other types of soil
Silt soil (effects on fumigants) - ANS its fine texture requires higher application rates than any
other soil type
Clay soil (effects on fumigants) - ANS its medium texture retains water between smaller pore
spaces, which can block fumigant movement through the soil
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
