SET - 4 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

By FPAPK

Published: Jun 12, 2026 at 3:52 am

MARINE EXAM

15 min read

BASIC OTFC COURSE

Boost your exam preparation with OCTF Mock Test Set 4 (2026), created for seafarers who are preparing for the Basic Training for Oil and Chemical Tanker Cargo Operations (OCTF) certification. This mock test is an excellent way to review essential topics before your final assessment.

The OCTF course covers important subjects such as tanker cargo handling, safety precautions, pollution prevention, hazard identification, and emergency response procedures. Practicing these MCQs helps reinforce your understanding of onboard tanker operations.

This set contains 30 updated multiple-choice questions based on current maritime training standards and commonly asked exam topics. Regular practice can improve your confidence, strengthen your knowledge, and increase your chances of passing the OCTF exit examination.

Start solving OCTF Set 4 Questions and Answers – 2026 today and take the next step toward a successful tanker certification with better preparation and practical knowledge.

Practice with 30 questions from the BASIC OTFC COURSE bank. Each question is verified and explained.

MCQ Practice Questions (30)

The total capacity of the slop tank or tanks should be not less than what percentage of the oil-carrying capacity of the vessel ?

a 3%

b 5%

c 7%

d 10%

What is the other name used for liquids' freezing or solidification point?

a Boiling point

b Melting point

c Pour point

d Saturation point

The lowest temperature at which the liquid remains a fluid is called the:

a The flow point

b The pour point

c The melting point

d The Liquefaction point

Fire & explosion in unprotected cargo tanks of oil tanker can have wide variety of causes-identify one that is associated with accident due to electrostatic charge:

a The use of high capacity tank washing machines

b Empty tank gases ignited during cleaning or collision resulting an explosion and rupture on the main deck.

c Very rich vapour expelled from tank opening during last stage of loading which after dilution may be ignited by accommodation ignition sources or the like.

d Auto-ignition – the vapour from flammable liquids (including oil fuel and lubricating oil) may ignite if the liquid comes into contact with a surface heated above the auto-ignition temperature ( e.g.,steamlines, overheated equipment) despite the abse

The vacuum strip system was developed on oil tankers to

a remove all hydrocarbon gases from the tanks after discharging

b prevent cavitation in centrifugal cargo pumps

c quickly remove rain water collecting on deck

d discharge cargo without any human intervention

In the chemical composition of typical petroleum

a The natural gas consist of 80 - 85% Carbon

b The crude oil consist of 82 - 87% Carbon,

c The asphalt consist of 12 - 15% Hydrohen

d The Natural gas consist of 0.1 - 5% Oxygena

In paraffin's atomic structure, the valence of all the carbon atoms is satisfied by single bond. Each carbon atom is connected to each other carbon atom by a single covalent bond. This hydrocarbon is

a Branched hydrocarbon

b Unsaturated hydrocarbon

c Saturated hydrocarbon

d Linear hydrocarbon

What is the purpose of tank coating?

a to add strength to cargo tanks

b to carry heated cargo

c to prevent corrosion in cargo tanks

Specific gravity is used by the American Petroleum Institute (API) to classify various

a Viscosities of oil

b Vapor densities of oil

c Weights of oil

d Volumes of oil

The main elements of peak safety performance are :

a reducing the number of accidents to less than 5 % of the previous year accidents

b reducing the number of pollution incidents to less than 2 % of the previous year pollution incidents.

c no operational incidents , no personal injuries and no harm to environment.

An inert gas generator burns what oil to generate inert gas ?

a Crude oil

b Heavy oil

c Diesel oil

d Gas oil

Pump room bilge high level alarm should activate in :

a CCR

b ECR

c ECR , CCR and navigation bridge

d Chief officer's cabin

Sublimation is the phase transition of a substance:

a From the liquid to the solid phase

b From the solid to the liquid phase

c From to the gas phase to the solid phase

d From the solid to the gas phase

Two valve separation on chemical tankers is used

a to lock liquid or vapour between the valves

b so that second valve can be opened if one does not

c so that second valve can be closed if leak is detected

d to prevent contamination problems due to leaks

Which of the following is not a standard type of cargo tank on chemical tankers?

a Independent tank

b gravity tank

c Suspended tank

d Integral tank

Presence of ……………….. in fuel oil leads to abrasive wear in fuel pumps and cylinder liners.

a Ash

b Vanadium

c Alumino silicates

d water

Cargo pump rooms are fitted with :

a one fan for ventilation

b portable water sprinklers for fire fighting

c fixed fire extinguishing system

The stretcher for emergency rescue from pump room should be

a available close to the pump room

b kept permanently rigged for hoisting an injured person

c kept in ship's hospital and clearly marked

Hydrocarbons are found in nature in many different forms, mainly as

a Gasoline, Diesel oil, Fuel oil etc.

b Liquid Petroleum, Natural Gas, Asphalt etc.

c Kerosine, Jet fuel, Lubricant etc

d Naphtha, Aviation gasoline, Heating oil etc.

The most common type of cargo pumps found on chemical tankers are

a centrifugal pumps

b deep well pumps

c vane pumps

d gear pumps

What is the sulfur content in natural gas of typical petroleum?

a 0.20%

b 0.1 - 6%

c 2 - 8%

d 12 - 15%

Submersible pumps found in chemical tankers are normally made of

a Aluminium alloy

b Fiber

c stainless steel

d nickel alloy

Electrostatic discharge causing spark can take the form of ,

a corona

b brush discharge

c propagating brush discharge

d electric discharge accompanied by a spark

Inert gas is introduced to cargo tank to :

a lower the LEL of cargo vapor.

b to make the cargo vapors a lean mixture of hydro carbons

c to exclude oxygen and thus prevent fire or explosion.

Paraffins are fully saturated (no double bond). They remain unchanged over long periods of geological time and they are

a Unstable

b Soluble

c stable

d Reactive

Cargo tanks entrances on tankers are:

a Weathertight

b Watertight

c Could be weathertight or watertight

d Neither watertight or weathertight

How is Putrefaction process connected to Carbon Monoxide?

a Putrefaction process generates obnoxious and toxic vapours

b Putrefaction process depletes the oxygen in the tank due to chemical reaction

c Putrefaction process generates obnoxious and toxic vapours and these depletes the oxygen in the tank due to chemical reaction

d Putrification occurs due to decrease of tank temperature

The ring main pipeline system is extensively used on:

a VLCCs

b Crude oil tankers

c Medium range tankers

d Product carriers

Tank washings generated from tanks having different incompatible cargoes

a can be collected into the same slop tank and discharged to shore

b should be collected in separate slop tanks and pumped out separately to shore

c can be collected in the pump room bilge and pumped out later

d should be retained in the cargo tank until discharge to shore

Cargo tank fill alarm indicator panels:

a are normally fitted on the bridge and sometimes on deck

b are normally fitted in the engine control room and sometimes on deck

c are normally fitted on the bridge and sometimes in the engine control room

d are normally fitted in the cargo control room and sometimes on deck

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Mock Test Info

Course Name BASIC OTFC COURSE

Mock Test 4

Questions 30

Students 1,345

Test Time 15 Minutes

BASIC OTFC COURSE

Mock Test Sets

✓ SET - 1 | OCTF Exit Exam Mock Test - Questions and Answers - 2026 ✓ SET - 2 | OCTF Exit Exam Mock Test - Questions and Answers - 2026 ✓ SET - 3 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

▶ SET - 4 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

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SET - 4 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

BASIC OTFC COURSE

MCQ Practice Questions (30)

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Your Examination Result

The total capacity of the slop tank or tanks should be not less than what percentage of the oil-carrying capacity of the vessel ?

What is the other name used for liquids' freezing or solidification point?

The lowest temperature at which the liquid remains a fluid is called the:

Fire & explosion in unprotected cargo tanks of oil tanker can have wide variety of causes-identify one that is associated with accident due to electrostatic charge:

The vacuum strip system was developed on oil tankers to

In the chemical composition of typical petroleum

In paraffin's atomic structure, the valence of all the carbon atoms is satisfied by single bond. Each carbon atom is connected to each other carbon atom by a single covalent bond. This hydrocarbon is

What is the purpose of tank coating?

Specific gravity is used by the American Petroleum Institute (API) to classify various

The main elements of peak safety performance are :

An inert gas generator burns what oil to generate inert gas ?

Pump room bilge high level alarm should activate in :

Sublimation is the phase transition of a substance:

Two valve separation on chemical tankers is used

Which of the following is not a standard type of cargo tank on chemical tankers?

Presence of ……………….. in fuel oil leads to abrasive wear in fuel pumps and cylinder liners.

Cargo pump rooms are fitted with :

The stretcher for emergency rescue from pump room should be

Hydrocarbons are found in nature in many different forms, mainly as

The most common type of cargo pumps found on chemical tankers are

What is the sulfur content in natural gas of typical petroleum?

Submersible pumps found in chemical tankers are normally made of

Electrostatic discharge causing spark can take the form of ,

Inert gas is introduced to cargo tank to :

Paraffins are fully saturated (no double bond). They remain unchanged over long periods of geological time and they are

Cargo tanks entrances on tankers are:

How is Putrefaction process connected to Carbon Monoxide?

The ring main pipeline system is extensively used on:

Tank washings generated from tanks having different incompatible cargoes

Cargo tank fill alarm indicator panels:

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