SET - 7 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

By FPAPK

Published: Jun 15, 2026 at 5:21 am

MARINE EXAM

15 min read

BASIC OTFC COURSE

Get ready for your certification with OCTF Exit Exam Mock Test Set 7 – 2026. This practice test is designed for seafarers preparing for the Basic Training for Oil and Chemical Tanker Cargo Operations (OCTF) course and helps you revise the most important exam topics.

The OCTF course focuses on tanker cargo operations, personal safety, pollution prevention, emergency response, hazard identification, and safe handling of oil and chemical cargoes. These subjects are essential for anyone working onboard oil and chemical tankers.

This mock test contains 30 updated multiple-choice questions prepared to match the latest training standards and exam pattern. Regular practice will improve your knowledge, increase your confidence, and help you perform better in the final assessment.

Begin solving OCTF Set 7 Questions and Answers – 2026 today and strengthen your understanding of tanker operations while preparing for a successful maritime certification exam.

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

MCQ Practice Questions (30)

For Oxygen analyzer, identify the key principle upon which the analyzer is working,

a A Wheatstone bridge circuit is formed using the two wires. It is used to measure a resistance by balancing two legs of the circuit.

b The sample of atmosphere is filtered and passed through a diffuser before reaching the two chambers.

c One chamber is with a magnetic field and the other without a magnetic field.

d A difference in the thermal conductivity of the oxygen with respect to air is developed and this causes an imbalance in the resistance.

Flash point is the ……………..temperature at which fuel oil catches fire.

a Moderate

b Maximum

c Minimum

Higher viscosity means

a Proper atomization of fuel

b Rich atomization of fuel

c Poor atomization of fuel

A thermoelectric detector:

a Uses a heat sensor

b converts heat to electrical energy

c detects a rise in tempetrature

d uses a fixed temperature stop

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

Paraffins are pure hydrocarbons containing:

a only hydrogen

b only carbon

c carbon and hydrogen

d bromine

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.

Which part is included to the Fire Triangle to extend it to the Fire Tetrahedon:

a heat

b chain reaction

c fuel

d oxygen

What bare minimum should be done before working on electrical equipment?

a Switch off the mains and start working

b Open the equipment and commence work.

c Complete electrical isolation checklist

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

a 0.20%

b 0.1 - 6%

c 2 - 8%

d 12 - 15%

An inert gas system is required to be fitted:

a On all tankers of above 20,000 tonnes deadweight

b On product tankers of above 20,000 tonnes deadweight

c On crude oil tankers of above 20,000 tonnes deadweight

d On chemical tankers of above 20,000 tonnes deadweight

After use of portable foam extinguisher, the equipment is well flushed with water to keep :

a The system clean.

b Ready for re use.

c The nozzles clear and prevent clogging.

During transit of avessel if chemical fire occurs, the vessel should :

a Stop and allow other ships to proceed.

b Reduce vessel speed to minimum possible.

c Steer clear off other vessels.

What is an inert condition ?

a When the oxygen has been eliminated from a tank

b When the oxygen is 10% by volume in a tank

c A condition in which the oxygen content throughout the atmosphere of a tank has been reduced to 8% or less by volume by the addition of inert gas.

d When the oxygen is 21% by volume in a tank

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

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

What are all the three basic stages which leads to a potential static hazard and necessary for an electrostatic ignition?

a Viscosity, charge seperation and temperature

b Charge accumulation, velocity and density

c Charge separation, charge accumulation and electrostatic discharge

d Flammable gas, air and heat source

What is the purpose of scrubber in IG plant ?

a only to cool the flue gas

b only to clean the flue gas

c To cool and also to clean the flue gas

d for easy flow of flue gas

Carbon dioxide extinguishes a fire by

a Heat removal or cooling

b Smothering or oxygen exclusion

c Flame inhibition

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

The total capacity of all slop tanks on an oil tanker normally should be

a 1% of the total oil carrying capacity of ship

b 2% of the total oil carrying capacity of ship

c 3% of the total oil carrying capacity of ship

d 4% of the total oil carrying capacity of ship

What is the effect of intermolecular forces on vapor pressure?

a Relatively strong force will increase vapor pressure

b Relatively strong force will decrease vapor pressure

c Relatively weak force will decrease vapor pressure

d Relatively weak force does not have any effect on vapor pressure

H2S gas is :

a less toxic

b inflammable

c toxic, corrosive and flammable

Tanker pump room ventilation must be switched on at least how many minutes before entry ?

a 10 minutes

b 15 minutes

c 30 minutes

d One hour

The (auto) ignition temperature is that temperature at which __________.

a no spark or flame is required to ignite gas or vapor

b a fuel begins to give off explosive vapors

c a fuel if ignited will continue to burn

d a 1% mixture of the fuel with air will explode

What international regulatory requirements govern management & organization onboard?

a MARPOL

b OPA 90

c STCW

d STCW & the ISM Code of the IMO

What is putrifaction?

a Putrifaction: Most animal and vegetable oils undergo decomposition over time in stored condition

b Putrifaction: Most mineral oils undergo decomposition over time in stored condition, when heated

c Putrifaction: Most animal and vegetable oils undergo decomposition when heated

d Putrifaction: Applies to all mineral and vegetable oils carried on tankers

What is purging ?

a The introduction of inert gas into a tank already in the inert condition to further reduce the existing oxygen content or hydrocarbon gas content

b Introducing of oxygen into a tank to a high level

c Using blowers to push oxygen into a tank

d Using natural ventilation to gas free a tank

What is very important to be carried out after use of deck foam system?

a Stop all pumps for deck foam system.

b Close all valves in the system.

c Flush the system complete with sea water.

What is the eight-hour safe exposure limit for Carbon Monoxide?

a 15ppm

b 25ppm

c 125ppm

d 250ppm

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Mock Test Info

Course Name BASIC OTFC COURSE

Mock Test 7

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 ✓ SET - 6 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

▶ SET - 7 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

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8 SET - 8 | OCTF Exit Exam Mock Test - Questions and Answers - 2026 9 SET - 9 | OCTF Exit Exam Mock Test - Questions and Answers - 2026 10 SET - 10 | OCTF Exit Exam Mock Test - Questions and Answers - 2026 11 SET - 11 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

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SET - 7 | OCTF Exit Exam Mock Test - Questions and Answers - 2026

BASIC OTFC COURSE

MCQ Practice Questions (30)

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Your Examination Result

For Oxygen analyzer, identify the key principle upon which the analyzer is working,

Flash point is the ……………..temperature at which fuel oil catches fire.

Higher viscosity means

A thermoelectric detector:

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

Paraffins are pure hydrocarbons containing:

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

Which part is included to the Fire Triangle to extend it to the Fire Tetrahedon:

What bare minimum should be done before working on electrical equipment?

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

An inert gas system is required to be fitted:

After use of portable foam extinguisher, the equipment is well flushed with water to keep :

During transit of avessel if chemical fire occurs, the vessel should :

What is an inert condition ?

Tank washings generated from tanks having different incompatible cargoes

How is Putrefaction process connected to Carbon Monoxide?

What are all the three basic stages which leads to a potential static hazard and necessary for an electrostatic ignition?

What is the purpose of scrubber in IG plant ?

Carbon dioxide extinguishes a fire by

Two valve separation on chemical tankers is used

The total capacity of all slop tanks on an oil tanker normally should be

What is the effect of intermolecular forces on vapor pressure?

H2S gas is :

Tanker pump room ventilation must be switched on at least how many minutes before entry ?

The (auto) ignition temperature is that temperature at which __________.

What international regulatory requirements govern management & organization onboard?

What is putrifaction?

What is purging ?

What is very important to be carried out after use of deck foam system?

What is the eight-hour safe exposure limit for Carbon Monoxide?

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