QAL CATEGORY M TEST ACTUAL 2026/2027
QUESTIONS AND 100% CORRECT ANSWERS
QAL CATEGORY M TEST – ACTUAL EXAM 100% Verified Questions and
Correct Answers A+ Graded
SECTION 1: FUMIGANT BASICS & PROPERTIES
Question 1
What is the primary definition of a fumigant?
A) A pesticide applied only in liquid form
B) A pesticide that is applied as a gas or vapor
C) A biological control agent for insects
D) A mechanical pest control device
Correct Answer: B
Explanation: Fumigants are chemical pesticides that are applied in gaseous or
vapor form to control pests. Unlike other pesticides applied as liquids or solids,
fumigants volatilize to penetrate areas where pests reside .
1
,Question 2
How do fumigants primarily differ from other pesticide formulations?
A) They are always applied as liquids
B) They act by direct contact only
C) They are applied as gases or vapors and penetrate spaces
D) They are non-toxic to humans
Correct Answer: C
Explanation: Fumigants are applied as gases or vapors and spread to penetrate
spaces and materials. They are toxic when absorbed or inhaled and are non-
selective pesticides that kill all pests .
Question 3
What does "volatility" refer to in the context of fumigation?
A) How readily a substance turns to vapor
2
,B) How toxic a substance is
C) How long a substance remains in the environment
D) How flammable a substance is
Correct Answer: A
Explanation: Volatility is a measure of how readily a substance vaporizes. This is a
key property of effective fumigants; high volatility allows the fumigant to disperse
as a gas and penetrate the treatment area .
Question 4
A substance that vaporizes readily is described as:
A) Stable
B) Reactive
C) Volatile
D) Soluble
Correct Answer: C
3
, Explanation: A substance that vaporizes readily is described as volatile. Volatility is
a key property of effective fumigants, enabling them to turn into gas and disperse .
Question 5
Which fumigant reacts with water to form a gas?
A) Methyl bromide
B) Sulfuryl fluoride
C) Magnesium phosphide
D) Metam sodium
Correct Answer: C
Explanation: Magnesium phosphide reacts with water to form phosphine gas. This
reaction is used to generate the fumigant gas in the treatment area .
Question 6
The fumigant MITC is a breakdown product of:
4
QUESTIONS AND 100% CORRECT ANSWERS
QAL CATEGORY M TEST – ACTUAL EXAM 100% Verified Questions and
Correct Answers A+ Graded
SECTION 1: FUMIGANT BASICS & PROPERTIES
Question 1
What is the primary definition of a fumigant?
A) A pesticide applied only in liquid form
B) A pesticide that is applied as a gas or vapor
C) A biological control agent for insects
D) A mechanical pest control device
Correct Answer: B
Explanation: Fumigants are chemical pesticides that are applied in gaseous or
vapor form to control pests. Unlike other pesticides applied as liquids or solids,
fumigants volatilize to penetrate areas where pests reside .
1
,Question 2
How do fumigants primarily differ from other pesticide formulations?
A) They are always applied as liquids
B) They act by direct contact only
C) They are applied as gases or vapors and penetrate spaces
D) They are non-toxic to humans
Correct Answer: C
Explanation: Fumigants are applied as gases or vapors and spread to penetrate
spaces and materials. They are toxic when absorbed or inhaled and are non-
selective pesticides that kill all pests .
Question 3
What does "volatility" refer to in the context of fumigation?
A) How readily a substance turns to vapor
2
,B) How toxic a substance is
C) How long a substance remains in the environment
D) How flammable a substance is
Correct Answer: A
Explanation: Volatility is a measure of how readily a substance vaporizes. This is a
key property of effective fumigants; high volatility allows the fumigant to disperse
as a gas and penetrate the treatment area .
Question 4
A substance that vaporizes readily is described as:
A) Stable
B) Reactive
C) Volatile
D) Soluble
Correct Answer: C
3
, Explanation: A substance that vaporizes readily is described as volatile. Volatility is
a key property of effective fumigants, enabling them to turn into gas and disperse .
Question 5
Which fumigant reacts with water to form a gas?
A) Methyl bromide
B) Sulfuryl fluoride
C) Magnesium phosphide
D) Metam sodium
Correct Answer: C
Explanation: Magnesium phosphide reacts with water to form phosphine gas. This
reaction is used to generate the fumigant gas in the treatment area .
Question 6
The fumigant MITC is a breakdown product of:
4
