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

By FPAPK

Published: Jun 11, 2026 at 3:46 am

MARINE EXAM

15 min read

BASIC OTFC COURSE

Get ready for your certification with OCTF Mock Test Set 3 (2026), specially designed for seafarers preparing for the Basic Training for Oil and Chemical Tanker Cargo Operations (OCTF) exit examination. This practice test helps you review important tanker safety concepts in a simple and effective way.

The OCTF course focuses on safe cargo handling, pollution prevention, hazard awareness, emergency procedures, and operational safety while working on oil and chemical tankers. Regular practice is essential for improving both knowledge and exam performance.

This 2026 OCTF Mock Test includes 30 carefully selected multiple-choice questions based on the latest training topics and maritime industry standards. Solving these questions regularly can increase your confidence and help you perform better in the final assessment.

Start practicing OCTF Set 3 Questions and Answers – 2026 today and strengthen your understanding of safe tanker cargo operations before your exit exam.

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

MCQ Practice Questions (30)

The content of cycloparaffins in petroleum may vary

a Up to 60%

b Up to 70%

c Up to 35%

d Up to 50%

A liquid is considered to be flammable when the flash point is less than

a 50° F

b 60° F

c 70° F

d 80° F

What is the safety margin of tank volume, when calculating filling ratio of a cargo which needs heating during its carriage?

a 5% of the Tank capacity

b 10% of the Cargo capacity

c 2% of the Tank capacity

d 1% of the Tank capacity

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

Chemical cargo vapors can enter human body due to :

a continuous working on deck.

b working in the pump room

c inhalation, skin contact and also by swallowing.

d improper use of proper PPE

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

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.

How many series or types of hydrocarbons are present in petroleum in important quantities?

a three

b Seven

c Five

d Four

Major danger occurs from a vapor cloud if it is :

a dissipated in atmosphere

b reduced in vapor concentration

c ignited

A type 1 chemical tanker is intended to tansport cargoes that have

a Severe environmental and safety hazards

b Appreciably severe environmental and safety hazards

c Sufficiently severe environmental and safety hazards

Organisational safety value aims at :

a < 2 incidents in a year

b reduce incidents to less than 10 % of incidents in the previous year

c Zero incident programme

d allow only one incident per year.

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

An unsaturated hydrocarbon is one in which the valence of some of the carbon atom is not satisfied by single bond, so that these atoms are connected to one another with two or more covalent bonds. Find the correct example for Unsaturated hydrocarbon

a Benzene

b Paraffin

c Alkane

d Naphthene

Tank clingage depends on:

a surface tension only

b cohesive and adhesive forces

c cohesive, adhesive forces and surface tension

d cohesive forces, adhesive forces and the liquids melting point

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

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 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

Submersible pumps found in chemical tankers are normally made of

a Aluminium alloy

b Fiber

c stainless steel

d nickel alloy

A starting interlock in the ODME ensures

a the monitoring equipment is fully operational before commencing the discharge of the oil effluent at sea

b prevents malfunctioning of the system

c that an alarm is given off when the system malfunctions

d stops discharge of the oil effluent when the oil content exceeds 5 part per million

Behavioural assesment programmes help in :

a creating additional stress to employees

b bringing down the morale of employees

c help in making changes to company's safety culture.

The density of a crude or refined product measured, which is equal to (141.5/specific gravity)—131.5) is known as

a API Density

b Specific Gravity

c Density (Kg/M3)

d API gravity (ºAPI)

Tanks of tankers do not exceed:

a 0.1 of ship’s length

b 0.15 of ship’s length

c 0.2 of ship’s length

d 0.25 of ship’s length

Higher viscosity means

a Proper atomization of fuel

b Rich atomization of fuel

c Poor atomization of fuel

What is Cargo inhibition?

a All chemical cargo physical and chemical properties change, during transportation; to avoid this, certain inhibitors are added to the cargo

b For some chemical cargoes, under heat and in presence of oxygen, their physical and Chemical properties change, to avoid this certain inhibitors are added to the cargo

c Some chemical cargoes some physical and chemical properties change due to cold weather in presence of oxygen, to avoid this, certain inhibitors are added to the cargo

d Adding Inhibitors to a refined vegetable oil adds its market value as the inhibitor maintains its color

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

Paraffins are pure hydrocarbons containing:

a only hydrogen

b only carbon

c carbon and hydrogen

d bromine

Framo deepwell pumps are driven by :

a steam turbines

b electric motor

c hydraulic motor

d direct drive with diesel engine

Of the hydrocarbons found in nature, which is the lighter fraction of hydrocarbons, which can be free or dissolved ?

a Crude oil

b Asphalt

c Refined oil

d Natural gas

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

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

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Mock Test Info

Course Name BASIC OTFC COURSE

Mock Test 3

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

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

BASIC OTFC COURSE

MCQ Practice Questions (30)

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Your Examination Result

The content of cycloparaffins in petroleum may vary

A liquid is considered to be flammable when the flash point is less than

What is the safety margin of tank volume, when calculating filling ratio of a cargo which needs heating during its carriage?

An inert gas system is required to be fitted:

Chemical cargo vapors can enter human body due to :

What is the effect of intermolecular forces on vapor pressure?

The main elements of peak safety performance are :

How many series or types of hydrocarbons are present in petroleum in important quantities?

Major danger occurs from a vapor cloud if it is :

A type 1 chemical tanker is intended to tansport cargoes that have

Organisational safety value aims at :

Tank washings generated from tanks having different incompatible cargoes

An unsaturated hydrocarbon is one in which the valence of some of the carbon atom is not satisfied by single bond, so that these atoms are connected to one another with two or more covalent bonds. Find the correct example for Unsaturated hydrocarbon

Tank clingage depends on:

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

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 Cold Work?

Submersible pumps found in chemical tankers are normally made of

A starting interlock in the ODME ensures

Behavioural assesment programmes help in :

The density of a crude or refined product measured, which is equal to (141.5/specific gravity)—131.5) is known as

Tanks of tankers do not exceed:

Higher viscosity means

What is Cargo inhibition?

The vacuum strip system was developed on oil tankers to

Paraffins are pure hydrocarbons containing:

Framo deepwell pumps are driven by :

Of the hydrocarbons found in nature, which is the lighter fraction of hydrocarbons, which can be free or dissolved ?

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

In the chemical composition of typical petroleum

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