SET - 5 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

By FPAPK

Published: Jun 13, 2026 at 3:57 am

MARINE EXAM

15 min read

BASIC OTFC COURSE

Prepare effectively for your certification with OCTF Mock Test Set 5 (2026), designed for seafarers taking the Basic Training for Oil and Chemical Tanker Cargo Operations (OCTF) course. This practice set helps you review important topics and improve your exam readiness.

The OCTF course teaches the fundamentals of tanker cargo operations, including cargo handling procedures, safety measures, pollution prevention, hazard awareness, and emergency response onboard oil and chemical tankers. Understanding these topics is essential for safe and efficient ship operations.

This mock test features 30 carefully selected multiple-choice questions based on the latest maritime training standards and commonly covered exam subjects. Regular practice will help strengthen your knowledge, improve accuracy, and build confidence before the final assessment.

Start practicing OCTF Set 5 Questions and Answers – 2026 today and take another step toward successfully completing your tanker training and certification.

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

MCQ Practice Questions (30)

What is Upper flammable limit ?

a The limit for man entry of personnel into tanks

b The concentration of a hydrocarbon gas in air above which there is insufficient oxygen to support combustion

c The limit where there is insuffient inert gas to support combustion

d The limit where there is too much inert gas to support combustion

What is the flammable range ?

a Vapor concentration below LEL

b Vapor concentration above UEL

c Vapor concentration range between LEL and UEL

Paraffins are pure hydrocarbons containing:

a only hydrogen

b only carbon

c carbon and hydrogen

d bromine

Which type of cargoes are often known as static accumulator cargoes?

a Crude oil

b Vegetable oil

c Highly refined petroleum products

d Animal oil

Crude oil washing:

a is done with portable tank washing machines

b is done with pressurised crude oil

c has 5 stages

d is done at the halfway stage of the discharging cycle

Chemical tankers carry :

a Crude petroleum

b Products like kerosene

c Noxious liquid substaces

d Clean products

Major danger occurs from a vapor cloud if it is :

a dissipated in atmosphere

b reduced in vapor concentration

c ignited

Which one of the following is not a piping system found on an oil tanker?

a Ring main system

b Integrated system

c Direct line system

d Free flow system

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

What is hot work ?

a Hot work is carried out in high ambient temperatures

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

c The temperature is very high where the work is done

d Work carried out using hot material

Cargo tanks entrances on tankers are:

a Weathertight

b Watertight

c Could be weathertight or watertight

d Neither watertight or weathertight

Which of the following is true about eductors?

a They can be used only when there is a good level of liquid in the tank to be pumped out

b Sea water can be used as drive and crude oil pumped out from the tanks

c They sometimes make high vibrations and even lead to pipeline and gauge damage

d A long preparation is required before eductor can be put to use

H2S gas is :

a less toxic

b inflammable

c toxic, corrosive and flammable

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

a Ash

b Vanadium

c Alumino silicates

d water

Back flow of inert gas is prevented by:

a An isolating valve

b The deck water seal

c A valve provided in the scrubber

d The deck mechanical non-return valve

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 most common type of cargo pumps found on chemical tankers are

a centrifugal pumps

b deep well pumps

c vane pumps

d gear pumps

Identify the hazards of NLS cargoes from the diamond

a A: Health Hazard; B: Fire Hazard; C: Reactivity Hazard; D- Specific Hazard

b A: Fire Hazard; B: Health Hazard; C: Reactivity Hazard; D- Specific Hazard

c A: Health Hazard; B: Fire Hazard; C: Specific Hazard; D- Reactivity Hazard

d A: Reactivity Hazard; B: Fire Hazard; C: Health Hazard; D- Specific Hazard

What precautions must be taken in the vicinity of the engine room bilges?

a Should be clear of rubbish

b Should be covered with muck and debris

c Should be allowed to corrode

What is Cold Work?

a Work that involves working at lower temperatures

b Work that involves using hand tools only

c Work that cannot create a source of ignition

d Work that is carried out at lower than ambient temperatures

Category Y noxious liquid substances are deemed to present a major hazard and therefore

a Justify the prohibition of discharge into the marine environment

b Justify a limitation on the quantity of the discharge into the marine environment

c Justify less stringent restrictions of discharge into the marine environment

How to safeguard a cargo carriage that is susceptible to polymerization?

a Suitable Inhibitors are added after cargo is loaded

b Inhibitors are added before the cargo is loaded

c Ships do not carry such cargoes due to the serious threat to the environment

d Maintain cargo tank temperatures high enough not to cause polymerization

Cargoes with a freezing point higher than the ambient temperature of the ship's trading area will need to be

a Cooled

b Refrigrated

c Heated

d Pressurised

Paraffin derivatives are added to fuel oil for :

a reducing density

b increase viscosity

c preventing sludge formation

What is ALARP ?

a As low as reasonably practicable

b As large as represented particles

c As low as reading practice

d As little as represented portion

Acidic solutions are formed in cargo tanks of tankers

a when sulphur compounds in oil cargoes react with water

b when sulphur compounds in oil cargoes react with oxygen

c when sulphur compounds in oil cargoes react with hydrocarbon gas

d when sulphur compounds in oil cargoes react with chemicals

The permit to work should not last for more than

a 12 hours

b 24 hours

c 36 hours

d 48 hours

Which of the following is not true about eductors?

a The discharge from eductor leads to pump room bilge

b It has no moving parts and is virtually maintenance free

c It is very efficient in striping crude oil of high vapour pressure

d The drive liquid has to be same as the stripped cargo

What is pressure surge ?

a When the pressure of oil increases suddenly at the manifold

b When the pressure of oil decreases suddenly at the manifold

c When the discharge pressure at the pump drops to zero

d A sudden increase in the pressure of the liquid in a pipeline brought about by an abrupt change in flow rate

The product of coefficient of viscosity, surface area and the velocity difference between layers of flowing liquid is:

a Viscosity of Liquid

b Force of friction between liquid layers

c Velocity of the fluid

d Vapor pressure of liquid

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Mock Test Info

Course Name BASIC OTFC COURSE

Mock Test 5

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

▶ SET - 5 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

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SET - 5 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

BASIC OTFC COURSE

MCQ Practice Questions (30)

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Your Examination Result

What is Upper flammable limit ?

What is the flammable range ?

Paraffins are pure hydrocarbons containing:

Which type of cargoes are often known as static accumulator cargoes?

Crude oil washing:

Chemical tankers carry :

Major danger occurs from a vapor cloud if it is :

Which one of the following is not a piping system found on an oil tanker?

Sublimation is the phase transition of a substance:

What is hot work ?

Cargo tanks entrances on tankers are:

Which of the following is true about eductors?

H2S gas is :

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

Back flow of inert gas is prevented by:

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

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

Identify the hazards of NLS cargoes from the diamond

What precautions must be taken in the vicinity of the engine room bilges?

What is Cold Work?

Category Y noxious liquid substances are deemed to present a major hazard and therefore

How to safeguard a cargo carriage that is susceptible to polymerization?

Cargoes with a freezing point higher than the ambient temperature of the ship's trading area will need to be

Paraffin derivatives are added to fuel oil for :

What is ALARP ?

Acidic solutions are formed in cargo tanks of tankers

The permit to work should not last for more than

Which of the following is not true about eductors?

What is pressure surge ?

The product of coefficient of viscosity, surface area and the velocity difference between layers of flowing liquid is:

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