Chemical Hazards & GHS Classification Exam - ESAC Academy

Chemical Hazards & GHS Classification

Exam

Course CodeCHGC-001

Course Date2025-10-17

Duration90 minutes

Enter your Student Code to start. The timer begins when you click Start Exam. The exam will auto-submit when time ends.

Student Code

Please enter your Student Code.

Make sure your code matches the one provided by the administrator.

ST

Student Name

STU-00000

90:00

Q1

Which statement best defines a hazard?

The chance of harm occurring The inherent potential of a substance to cause harm The way a person is exposed The outcome of exposure

Q2

What is the key difference between hazard and risk?

Both terms mean the same Risk is always higher than hazard Hazard can be eliminated; risk cannot Risk describes likelihood, hazard describes potential

Q3

According to GHS, no exposure means:

No hazard Risk remains high Hazard increases No harm even if hazard exists

Q4

In the hierarchy of controls, which is most effective?

PPE Administrative Engineering Elimination

Q5

Which of the following represents exposure?

Reading an SDS Labeling containers Replacing flammable solvent with water Worker breathing solvent vapors

Q6

Which of the following systems protect during transport of chemicals?

EU CLP OSHA HCS UN GHS workplace IATA-DGR and IMDG Code

Q7

Which UN agency issues rules for sea transport of dangerous goods?

ICAO IMO IATA UNECE

Q8

Under GHS, hazard class defines:

Severity of hazard Type of hazard family Specific nature of hazard Exposure route

Q9

Category 1 generally represents:

Least severe hazard Intermediate hazard Most severe hazard No hazard

Q10

Why are organic peroxides labeled with “Type A–G” instead of numbers?

To replace UN test data To simplify storage labeling To match SDS section numbers Because their behavior is qualitative, not linear in severity

Q11

A complete GHS label contains how many key elements?

3 4 6 8

Q12

Which item is not a required GHS label element?

Product identifier Signal word Supplier info Chemical formula

Q13

What do H-codes on labels represent?

Hazard statements Precautionary actions Temperature limits Storage codes

Q14

What does the first digit in an H-code indicate?

Chemical group Precaution level Pictogram shape Type of hazard (2 = physical, 3 = health, 4 = environmental)

Q15

Which series of P-codes covers emergency first-aid actions?

P1xx P2xx P3xx P4xx

Q16

According to the SDS structure, how many standard sections exist globally?

8 10 12 16

Q17

The SDS section describing first-aid measures is:

Section 3 Section 4 Section 5 Section 7

Q18

Section 8 of the SDS provides:

Disposal Toxicity data Chemical stability info Exposure limits & PPE

Q19

LD₅₀ refers to:

Lowest daily exposure limit Lowest dose that causes irritation Dose lethal to 50 % of test population Dose level causing 50 % allergic reaction

Q20

Section 14 of an SDS concerns:

Firefighting Toxicological details Regulatory information Transport classification

Q21

The purpose of a HazCom program is to ensure workers:

Avoid PPE at work Are shielded from chemicals Submit incident reports monthly Have the right to know about hazards

Q22

Secondary containers (like spray bottles) must:

Always use NFPA diamond only Be stored under fume hoods only Remain unlabeled if used immediately Use GHS pictograms identical to primary label if stored

Q23

Which color in hazard signage represents flammability in NFPA 704?

Blue Red Yellow White

Q24

In the NFPA diamond, the number 4 indicates:

No hazard Minor hazard Extreme danger Moderate hazard

Q25

Which organization regulates occupational chemical labeling in the United States?

EPA IATA OSHA WHO

Q26

The “Right-to-Know” principle gives employees:

Legal immunity for mistakes Ownership of SDS documents Ability to classify chemicals themselves Access to hazard information about chemicals they use

Q27

Which item is an administrative control under HazCom?

PPE Ventilation SOP training Containment tray

Q28

Signage with the flame-over-circle pictogram warns of:

Flammable liquids Corrosive acids Compressed gas Oxidizers

Q29

The “exploding bomb” symbol represents:

Flammable gas Pyrophoric substances Ozone-depleting chemicals Explosives or self-reactive materials

Q30

Under UAE OSHAD, the HazCom framework aligns with:

UN GHS only EU CLP only OSHA 29 CFR 1910 Subpart Z Both UN GHS and OSHAD-SF codes

Q31

Which is the first phase of chemical risk assessment?

Risk analysis Control implementation Hazard identification Review

Q32

The risk rating is calculated by multiplying:

Hazard × Exposure Likelihood × Severity Risk × Control PPE × Probability

Q33

In the 5×5 risk matrix, a score of 15 indicates:

Low Medium High Negligible

Q34

Which of the following reduces likelihood rather than severity?

PPE Training Explosion barrier Isolation chamber

Q35

The Swiss Cheese Model illustrates:

SDS format sections GHS category structure A storage compatibility rule Layered defenses that prevent incidents

Q36

Which control corresponds to “engineering” in the hierarchy?

Permit-to-work Hazard training Gloves and masks Fume hoods and ventilation

Q37

Which control measure is considered last resort?

PPE Elimination Substitution Administrative

Q38

The “3 Cs” in review phase stand for:

Compliance – Control – Containment Classification – Coding – Containment Communication – Competence – Control Consequence – Correction – Communication

Q39

A risk review must occur:

Every 5 years only Only once after installation After any incident or change When new equipment arrives in market

Q40

Asphyxiation from gas leak in confined space represents which exposure route?

Injection Inhalation Ingestion Absorption

Q41

The main rule of chemical segregation is:

Store alphabetically Store by supplier name Mix for efficient use of space Store by hazard class and compatibility

Q42

Acids and bases must be:

Kept in plastic bags Stored under the same hood Stored together to neutralize spills Separated with secondary containment

Q43

Flammable liquids should be stored in:

Wooden cupboards Standard steel lockers Refrigerators with food NFPA-approved flammable cabinets

Q44

The minimum secondary containment capacity must be at least:

50 % of total volume 75 % 100 % 110 % of largest container

Q45

Water-reactive materials like sodium metal should be stored:

With acids Under water With oxidizers In dry inert conditions

Q46

Which chemical class requires fire-rated cabinets and “No Smoking” signage?

Acids Bases Toxics Flammables

Q47

Oxidizers must be kept away from:

Inert gases Corrosives only Other oxidizers Flammables and combustibles

Q48

The color red on hazard signage generally represents:

Fire hazard Health hazard Reactivity hazard Special Precautions

Q49

In secondary containment, floors should be:

Carpeted Wood surfaced Flat without drainage Sloped toward sump collection area

Q50

Which of the following is true about chemical refrigerators?

Need no labeling Should be defrosted annually only Can store food and chemicals together Must be explosion-proof and dedicated to chemicals