100+ Free UK DGSA Core Practice Questions

Prepare for the UK Dangerous Goods Safety Adviser Core Examination exam with instant access — no signup required.

✓ No registration✓ No credit card✓ No hidden fees✓ Start practicing immediately

~55-60% Pass Rate

100+ Questions

100% Free

Loading practice questions...

Same family resources

Explore More UK Dangerous Goods Safety Adviser (DGSA)

Continue into nearby exams from the same family. Each card keeps practice questions, study guides, flashcards, videos, and articles in one place.

UK Dangerous Goods Safety Adviser (DGSA) Rail Exam (Qualifications Scotland / DfT)

Practice Questions100 questions

UK Dangerous Goods Safety Adviser (DGSA) Road Exam (Qualifications Scotland / DfT)

Practice Questions100 questions

2026 Statistics

Key Facts: UK DGSA Core Exam

100 Qs

Practice Questions

SQA DGSA Core Syllabus

65%

Pass Mark

SQA DGSA Rules

5 Years

Certificate Validity

ADR 1.8.3.16

The UK DGSA Core exam validates knowledge of ADR carriage of dangerous goods rules, DGSA legal duties, classification, packaging, vehicle marking, and emergency procedures. This is an English-language MCQ study adaptation for the official assessment; it does not replace required practical, oral, written, or hands-on performance.

Sample UK DGSA Core Practice Questions

Try these sample questions to test your UK DGSA Core exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under the ADR classification framework, which primary hazard characteristics define Class 3 dangerous goods?

A.Substances liable to spontaneous combustion or thermal decomposition upon contact with air or moisture.

B.Gases that are asphyxiating, oxidizing, toxic, or flammable at standard atmospheric pressure.

C.Corrosive liquids and solids that cause full-thickness destruction of skin tissue within specified exposure periods.

D.Flammable liquids having a flash point of not more than 60 °C and gas oils, diesel, and light heating oils with a flash point up to 100 °C.

Explanation: Class 3 comprises flammable liquids with a flash point of not more than 60 °C, as well as gas oils, diesel fuels, and light heating oils with a flash point higher than 60 °C up to 100 °C, under ADR Chapter 2.2.3.

2What degree of danger is represented by Packing Group I in ADR dangerous goods transport?

A.Substances exempt from packaging regulations.

B.Substances presenting low danger.

C.Substances presenting high danger.

D.Substances presenting medium danger.

Explanation: Under ADR Section 2.1.1.3, Packing Group I designates substances presenting high danger, requiring the highest level of UN packaging performance testing.

3Which hazard class covers corrosive substances under the ADR regulations?

A.Class 6.1

B.Class 9

C.Class 4.1

D.Class 8

Explanation: Class 8 covers corrosive substances which by chemical action attack epithelial tissue or damage/destroy other goods and transport units, as specified in ADR Section 2.2.8.

4What standard format is used to represent UN Numbers for dangerous goods identification?

A.A three-digit code preceded by the letter 'D'.

B.A five-character alphanumeric code starting with 'HAZ'.

C.A four-digit number preceded by the letters 'UN'.

D.A six-digit sequence separated by hyphens.

Explanation: United Nations Numbers are four-digit Arabic numerals assigned to dangerous substances and articles, preceded by the letters 'UN' (e.g., UN 1203), under ADR Chapter 2.1.

5Under ADR Class 2, which physical state category covers gases dissolved in a liquid phase solvent under pressure?

A.Compressed gases

B.Refrigerated liquefied gases

C.Adsorbed gases

D.Dissolved gases

Explanation: Dissolved gases are defined in ADR 2.2.2.1.2 as gases dissolved in a liquid phase solvent under pressure (such as Acetylene dissolved in acetone).

6What is the primary operational distinction between ADR Class 5.1 and Class 5.2?

A.Class 5.1 covers self-reactive solids, whereas Class 5.2 covers infectious liquids.

B.Class 5.1 covers radioactive materials, whereas Class 5.2 covers corrosive wastes.

C.Class 5.1 includes flammable gases, whereas Class 5.2 includes toxic gases.

D.Class 5.1 comprises oxidizing substances, whereas Class 5.2 comprises organic peroxides.

Explanation: ADR Class 5.1 covers oxidizing substances which, while in themselves not necessarily combustible, may yield oxygen and cause/contribute to combustion. Class 5.2 covers thermally unstable organic peroxides liable to exothermic self-accelerating decomposition.

7Which hazard class is designated for toxic substances under the ADR regulation?

A.Class 4.3

B.Class 6.2

C.Class 6.1

D.Class 5.1

Explanation: Class 6.1 covers toxic substances known to be toxic to humans or presumed toxic based on animal experiments, as specified in ADR Section 2.2.61.

8What type of dangerous goods are classified under ADR Class 9?

A.Explosives and blasting agents.

B.Refrigerated liquefied asphyxiant gases.

C.Miscellaneous dangerous substances and articles, including environmentally hazardous substances.

D.Self-heating substances liable to spontaneous combustion.

Explanation: ADR Class 9 encompasses miscellaneous dangerous substances and articles presenting a danger during carriage that is not covered by other classes, including environmentally hazardous substances and lithium batteries.

9When a liquid mixture meets the criteria for both Class 3 Packing Group II and Class 8 Packing Group II under ADR 2.1.3.10, which hazard class takes precedence as the primary hazard?

A.Class 3

B.Class 6.1

C.Class 8

D.Class 9

Explanation: According to the ADR 2.1.3.10 precedence of hazard table, when Class 3 PG II meets Class 8 PG II, Class 3 takes precedence as the primary hazard, with Class 8 as the subsidiary hazard.

10What flash point and initial boiling point thresholds assign a Class 3 flammable liquid to Packing Group I?

A.Flash point between 23 °C and 60 °C with no boiling point limit.

B.Flash point above 60 °C with boiling point above 100 °C.

C.Initial boiling point less than or equal to 35 °C regardless of flash point.

D.Flash point below 23 °C and initial boiling point greater than 35 °C.

Explanation: Under ADR 2.2.3.1.3, Class 3 liquids with an initial boiling point of ≤ 35 °C are assigned to Packing Group I due to their high volatility and severe flammability risk.

About the UK DGSA Core Exam

The UK Dangerous Goods Safety Adviser (DGSA) Core examination tests comprehensive knowledge of ADR regulations, dangerous goods classification, packaging specifications, DGSA statutory duties, documentation, vehicle marking, and emergency response procedures. This is an English-language MCQ study adaptation for the official assessment; it does not replace required practical, oral, written, or hands-on performance.

Assessment

Written open-book case study covering classification, packaging, DGSA duties, documentation, and emergency response. This is an English-language MCQ study adaptation for the official assessment; it does not replace required practical, oral, written, or hands-on performance.

Time Limit

75 minutes

Passing Score

65%

Exam Fee

£315 (SQA (Qualifications Scotland) on behalf of DfT)

UK DGSA Core Exam Content Outline

25%

Dangerous Goods Classification & UN Numbers

ADR Class 1 to 9 definitions, precedence of hazards, UN numbers, Packing Groups I-III, and environmental hazard criteria.

25%

Packaging, Tanks & Consignment Procedures

UN packaging specification codes, packing instructions, IBCs, tanks, filling ratios, mixed packing prohibitions, and LQ/EQ exemptions.

25%

DGSA Duties, Regulations & Training

Statutory DGSA duties under ADR 1.8.3, annual reporting, accident notification, general/function-specific training (ADR 1.3), and security plans (ADR 1.10).

25%

Documentation, Hazard Marking & Emergency Response

Transport documentation details, orange warning plates, Hazard Identification Numbers (HIN), warning labels, Instructions in Writing (ADR 5.4.3), emergency equipment, and tunnel codes.

How to Pass the UK DGSA Core Exam

What You Need to Know

Passing score: 65%
Assessment: Written open-book case study covering classification, packaging, DGSA duties, documentation, and emergency response. This is an English-language MCQ study adaptation for the official assessment; it does not replace required practical, oral, written, or hands-on performance.
Time limit: 75 minutes
Exam fee: £315

Keys to Passing

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

UK DGSA Core Study Tips from Top Performers

1Familiarize yourself thoroughly with the structure of the ADR regulations, including Volume I and Volume II.

2Understand how to identify Hazard Identification Numbers (HIN) and their special meanings (e.g. prefix X indicating water reactivity).

3Practice interpreting UN packaging code marks (e.g., 1A1/Y1.4/150) to quickly extract container type, packing group suitability, and test pressure.

Frequently Asked Questions

What is the role of a Dangerous Goods Safety Adviser (DGSA)?

Under ADR Section 1.8.3, any undertaking involved in the carriage, packing, loading, filling, or unloading of dangerous goods by road, rail, or inland waterway must appoint one or more DGSAs to monitor compliance, advise management, and prepare annual reports.

What is the pass mark for the SQA DGSA Core exam?

The pass mark for SQA DGSA examination papers is 65%.

How long is the DGSA certificate valid for in the UK?

The DGSA Vocational Training Certificate is valid for 5 years. Advisers must pass a renewal examination in the final year before expiry.