CHEMCO Exit Exam Questions 2025

CHEMCO Exit Exam

The CHEMCO Course (Advanced Training for Chemical Tanker Cargo Operations) is a 10-day mandatory training program for seafarers. After completing this course, candidates must take the CHEMCO Exit Exam to qualify to sail on an oil tanker with an Advance Chemical DCE.

The Chemco Course Exit Exam consists of 30 multiple-choice questions, and the exam duration is 30 minutes. Each question carries 1 mark, and candidates must score at least 15 marks to pass the exam.

What Topics Are Covered in CHEMCO Exit Exam Questions

The CHEMCO Exit Exam questions are generally based on the core areas of the course, including:

- SOLAS
- MARPOL Annex II
- IBC Code
- ISGOTT basics
- Cargo containment systems
- Materials of construction & compatibility
- Venting and gas freeing systems
- Flammability
- Toxicity
- Reactivity
- Pollution hazards (Category X, Y, Z)
- Vapour pressure & temperature effects

Students should practice these topics thoroughly to pass the CHEMCO Exit Exam.

CHEMCO Exit Exam Previous Year Questions

We have searched the previous CHEMCO exit exam questions and selected the most commonly asked questions in the Exit Exam. This exam will help you to clear the Exit Exam with the best possible preparation.

CHEMCO Exit Exam 2025

1 / 38

Which of the following is a supporter of combustion?

oxygen gas

nitrogen gas

cooking gas

producer gas

2 / 38

Tank bulkheads on a tanker are strengthened using:

Gusset plates, transverse webs and longitudinals.

Web frames, transverse webs and gusset plates.

Web frames, transverse webs and stringers.

Longitudinals, transverse webs and stringers.

3 / 38

Some people are very allergic to insect bites and stings. This condition is called:

Anaphylactic shock

Toxic shock syndrome

Septic shock

Cardiac arrest

4 / 38

When did Annex VI of MARPOL come into force?

May 19, 2006

July 1, 1992

December 31, 1988

5 / 38

Which gas helps in the process of combustion?

Producer gas

Oxygen gas

Cooking gas

Nitrogen gas

6 / 38

What is the meaning of health hazard in a Chemical Tanker?

Personnel Exposure to Fumes

Personnel Exposure to Noxious Liquids

Chance exposure to a Gas Free and ventilated stainless steel cargo tank

Personnel Exposure to Chemicals Next

7 / 38

Personnel should always carry personal H2S indicating device, except when?

Agreeing on ship-shore protocol for communicating during cargo operation

Cleaning filters

Connecting and disconnecting loading lines

Draining to open containment and mopping up spills

8 / 38

Who provides the resistance list stating approved cargoes, temperature and time limitations etc. for the tank coatings?

The shipyard

Paint maker

Classification society

IBC Code

9 / 38

Among the following, what represents the letter X shown in the above image of Chemical tanker?

Transverse webs

Webs

Type 1 center tank

Corrugated bulkhead

10 / 38

What must be located on the discharge side of the pump in a fire main system?

Strainer

Reduction valve

International shore connection

Pressure gauge

11 / 38

The energy possessed by all the molecules or atoms is called

Internal energy

Enthalpy

Free energy

Gibbs energy

12 / 38

If a victim is unconscious, you should first look for evidence of __________.

Irregular breathing

Head injury

Broken limbs

High fever

13 / 38

Which of the following conditions is NOT a symptom of traumatic shock?

Slow deep breathing

Pale and cold skin

Weak and rapid pulse

Restlessness and anxiety

14 / 38

Normally when do you use the local control valve?

During stripping and tank cleaning operation

In case of emergencies only

During normal operation

15 / 38

Find the correct statement with respect to special liquids carried in tankers

Special liquids are divided into three groups as Chemical Liquids, Vegetable Oils and Miscellaneous Liquids

Special liquids are divided into two groups, Animal/Vegetable oils and Miscellaneous Liquids

Special liquids are divided into two groups as Animal oils and Miscellaneous Liquids

Special liquids are divided into three groups as Animal oils, Vegetable oils and Miscellaneous Liquids

16 / 38

During loading/unloading operations on a tanker the accommodation ventilation is set to:

70% recirculation and 30% intake from atmosphere.

90% recirculation and 10% intake from atmosphere

80% recirculation and 20% intake from atmosphere.

95% recirculation and 5% intake from atmosphere.

17 / 38

Normally where are the other emergency stops for the hydraulic system located?

Manifold both port and starboard side

Engine control room

On the Bridge

In the forecastle

18 / 38

What other type of tank coating can accommodate almost all the chemical products which can be loaded in a zinc silicate coated tank?

Tar coated tanks

Cement coated tanks

Epoxy tanks

Phenolic resin coated tanks

19 / 38

When the hydraulic pump lines to the hydraulic motor lines are slightly corroded, it is better to run?

More pumps at a time in parallel in such a way that each pump operates at 40-50% capacity

Do not run the cargo pump at all, else you get into pollution issues

One or two cargo pumps at a time with 100%

One cargo pump at a time with more than 100% capacity

20 / 38

When performing abdominal thrusts on a patient who has a completely blocked airway, where should you position yourself?

On their side

On their back

Straddle their thighs

21 / 38

An inert gas system installed on a tanker is designed to

increase the rate of discharge of cargo

lower the oxygen levels inside cargo tanks, making explosion nearly impossible

aid in the stripping and cleaning of cargo tanks

force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere

22 / 38

Heimlich maneuver is used for

Acute bronchial asthma

Partial airway obstructions

Chronic bronchial asthma

Complete airway obstruction

23 / 38

The pipe used to connect two separate piping systems on a tank vessel is known as a __________.

transfer

junction

crossover

connection

24 / 38

What is hot work?

Work involving sources of ignition or temperatures sufficiently high to cause the ignition of a flammable gas mixture.

Work carried out using hot material

The temperature is very high where the work is done

Hot work is carried out in high ambient temperatures

25 / 38

Which reactants could be used safely to prepare potassium chloride?

aqueous potassium sulphate and aqueous sodium chloride

aqueous potassium hydroxide and dilute hydrochloric acid

potassium and dilute hydrochloric acid

potassium and aqueous sodium chloride

26 / 38

How the operation of chemical tankers differs from any other bulk liquid transportation operations, in a single voyage?

Large number of cargoes with different properties, characteristics and inherent hazards may be carried

The cargo carried in Chemical tankers is corrosive and Toxic

The cargo tanks are coated in Chemical Tankers

27 / 38

Liquids that have an open-cup flash point at or below 80 Deg F (26.7 Deg C) are classified as

Volatile Liquids

Combustible Liquids

Non-volatile Liquids

Flammable Liquids

28 / 38

What is Nitrogen Asphyxiation?

nitrogen which is undetectable to the human senses.

nitrogen, which is non-flammable, non-toxic, and colorless.

it is unconsciousness caused by nitrogen that can lead to death.

it is unconsciousness caused by inert gas that can lead to death.

29 / 38

What does Time Weighted Average (TWA) refer to?

averaging all the exposure times for a time period of 8 hours.

exposure time.

short-term exposure time.

highest exposure time.

30 / 38

If a victim is unconscious, you should first look for evidence of __________.

Broken limbs

High fever

Head injury

Irregular breathing

31 / 38

The area indicated by the number 'III' is known as the _________.

Local Control Valve

Cofferdam Purging

Cargo Purging Connection

Speed Torque Control Valve

32 / 38

What is the maximum allowable sulfur content in bunker fuel oil?

3.0% m/m.

4.5% m/m.

1.5% m/m.

33 / 38

Which method is used to supply inert gas from a flue gas system to the cargo tanks?

High capacity fan

Exhaust gas pressure from the stack

Natural aspiration

Inert gas compressor

34 / 38

What is the maximum interval between sampling and analyzing for each sampling head location sequentially?

not exceeding 30 minutes interval.

not exceeding 60 minutes interval.

not exceeding 40 minutes interval.

not exceeding 50 minutes interval.

35 / 38

Vegetable and animal oils may vary in composition and the most important factor is their free fatty acid content, which greatly affects

The suitability of coatings

The carriage pressure

The cargo tank atmosphere

The cargo pumping rate

36 / 38

What is a material safety data sheet (MSDS)?

A document identifying a substance and all its constituents

It is used for finding out the effects of inhalation

It is used for finding out the dangers of contract

A document giving the chemical name of the product

37 / 38

What is a material safety data sheet (MSDS)?

A document giving the chemical name of the product

It is used for finding out the dangers of contract

It is used for finding out the effects of inhalation

A document identifying a substance and all its constituents

38 / 38

What is an EEBD used for?

For escape from machinery or accommodation spaces in the event of an emergency

For supplying oxygen to a victim

For rescuing a person from a tank

For safety when entering a tank

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The average score is 70%

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