IATA DANGEROUS GOODS REGULATIONS
DGR EXAM 2026
1. What is the primary concern when shipping perfumes by air?
A) Toxic gas emission
B) Flammable liquid hazard
C) Corrosive solid risk
D) Radioactive contamination
Correct Answer: B) Flammable liquid hazard
Rationale: Perfumes and fragrances often contain alcohol-based solvents, making them
Class 3 Flammable Liquids. This classification requires appropriate packaging, labeling,
and documentation under IATA DGR. The flammable nature of the alcohol content poses a
significant fire risk during air transport .
2. Dry ice used for cooling perishable goods requires which of the following?
A) No declaration needed
B) Only airline approval
C) Dangerous Goods Declaration and proper marking
D) Treat as normal cargo
Correct Answer: C) Dangerous Goods Declaration and proper marking
Rationale: Dry ice is classified as UN1845, Carbon Dioxide, Solid, and requires declaration
and proper marking due to the asphyxiation risk from CO₂ gas emission. Even though it is
, commonly used for cooling perishable goods, it remains a regulated dangerous good. The
package must be marked with the proper shipping name and net quantity of dry ice .
3. What does the "Y" prefix on a packing instruction indicate?
A) Military cargo only
B) Limited quantity air shipment
C) Hazardous waste
D) Special provision material
Correct Answer: B) Limited quantity air shipment
Rationale: The "Y" prefix denotes packaging suitable for limited quantities by air transport.
This indicates reduced requirements for small quantities of dangerous goods, including
exemptions from certain documentation and labeling requirements .
4. What does the compatibility group letter in Class 1 (Explosives) indicate?
A) Container type
B) Flight restrictions
C) Storage and segregation requirements
D) Material weight
Correct Answer: C) Storage and segregation requirements
Rationale: Compatibility letters (A–S) designate how explosives may be stored and
transported together. This classification ensures that incompatible explosives are properly
segregated to prevent dangerous reactions. The compatibility group is a critical
component of the classification for explosives .
, 5. What is the UN number for gasoline?
A) UN 1090
B) UN 1203
C) UN 1263
D) UN 1950
Correct Answer: B) UN 1203
Rationale: UN1203 is assigned globally to aviation gasoline or gasoline. This is a Class 3
Flammable Liquid and requires proper packaging, labeling, and documentation. Gasoline
is one of the most commonly transported dangerous goods by air .
6. Which hazard class covers substances liable to spontaneous combustion?
A) Class 3
B) Class 4.2
C) Class 5.1
D) Class 6.1
Correct Answer: B) Class 4.2
Rationale: Class 4.2 covers substances liable to spontaneous combustion—materials that
self-heat or spontaneously combust in contact with air. These substances can ignite
without an external ignition source and require specific handling precautions during
transport .
7. What does the "Excepted Quantity" refer to in IATA DGR?
, A) Large shipments of dangerous goods
B) Very small quantities exempted from some requirements
C) Explosives only
D) Radioactive cargo
Correct Answer: B) Very small quantities exempted from some requirements
Rationale: Excepted quantities are very small amounts of dangerous goods (typically less
than 1 gram or 1 mL) that are exempt from most DGR requirements, including the
Shipper's Declaration. However, they still require specific packaging and labeling. These
are an exemption category with reduced regulatory requirements .
8. Class 1 dangerous goods represent which hazard?
A) Flammable liquids
B) Explosives
C) Gases
D) Toxic substances
Correct Answer: B) Explosives
Rationale: Class 1 is assigned to explosive materials per UN classification. This includes
both articles (like ammunition) and substances that can cause explosive effects. Explosives
are further divided into six divisions based on their hazard characteristics and
compatibility groups .
9. What document is required for a dangerous goods package to be accepted by
an air carrier?
A) Shipper's logbook
DGR EXAM 2026
1. What is the primary concern when shipping perfumes by air?
A) Toxic gas emission
B) Flammable liquid hazard
C) Corrosive solid risk
D) Radioactive contamination
Correct Answer: B) Flammable liquid hazard
Rationale: Perfumes and fragrances often contain alcohol-based solvents, making them
Class 3 Flammable Liquids. This classification requires appropriate packaging, labeling,
and documentation under IATA DGR. The flammable nature of the alcohol content poses a
significant fire risk during air transport .
2. Dry ice used for cooling perishable goods requires which of the following?
A) No declaration needed
B) Only airline approval
C) Dangerous Goods Declaration and proper marking
D) Treat as normal cargo
Correct Answer: C) Dangerous Goods Declaration and proper marking
Rationale: Dry ice is classified as UN1845, Carbon Dioxide, Solid, and requires declaration
and proper marking due to the asphyxiation risk from CO₂ gas emission. Even though it is
, commonly used for cooling perishable goods, it remains a regulated dangerous good. The
package must be marked with the proper shipping name and net quantity of dry ice .
3. What does the "Y" prefix on a packing instruction indicate?
A) Military cargo only
B) Limited quantity air shipment
C) Hazardous waste
D) Special provision material
Correct Answer: B) Limited quantity air shipment
Rationale: The "Y" prefix denotes packaging suitable for limited quantities by air transport.
This indicates reduced requirements for small quantities of dangerous goods, including
exemptions from certain documentation and labeling requirements .
4. What does the compatibility group letter in Class 1 (Explosives) indicate?
A) Container type
B) Flight restrictions
C) Storage and segregation requirements
D) Material weight
Correct Answer: C) Storage and segregation requirements
Rationale: Compatibility letters (A–S) designate how explosives may be stored and
transported together. This classification ensures that incompatible explosives are properly
segregated to prevent dangerous reactions. The compatibility group is a critical
component of the classification for explosives .
, 5. What is the UN number for gasoline?
A) UN 1090
B) UN 1203
C) UN 1263
D) UN 1950
Correct Answer: B) UN 1203
Rationale: UN1203 is assigned globally to aviation gasoline or gasoline. This is a Class 3
Flammable Liquid and requires proper packaging, labeling, and documentation. Gasoline
is one of the most commonly transported dangerous goods by air .
6. Which hazard class covers substances liable to spontaneous combustion?
A) Class 3
B) Class 4.2
C) Class 5.1
D) Class 6.1
Correct Answer: B) Class 4.2
Rationale: Class 4.2 covers substances liable to spontaneous combustion—materials that
self-heat or spontaneously combust in contact with air. These substances can ignite
without an external ignition source and require specific handling precautions during
transport .
7. What does the "Excepted Quantity" refer to in IATA DGR?
, A) Large shipments of dangerous goods
B) Very small quantities exempted from some requirements
C) Explosives only
D) Radioactive cargo
Correct Answer: B) Very small quantities exempted from some requirements
Rationale: Excepted quantities are very small amounts of dangerous goods (typically less
than 1 gram or 1 mL) that are exempt from most DGR requirements, including the
Shipper's Declaration. However, they still require specific packaging and labeling. These
are an exemption category with reduced regulatory requirements .
8. Class 1 dangerous goods represent which hazard?
A) Flammable liquids
B) Explosives
C) Gases
D) Toxic substances
Correct Answer: B) Explosives
Rationale: Class 1 is assigned to explosive materials per UN classification. This includes
both articles (like ammunition) and substances that can cause explosive effects. Explosives
are further divided into six divisions based on their hazard characteristics and
compatibility groups .
9. What document is required for a dangerous goods package to be accepted by
an air carrier?
A) Shipper's logbook
