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1. What is the Nitrogen content in asphalt of typical petroleum?
A. 2 - 8%
B. 1 - 15%
C. 0 - 2%
D. 3 -5%

2. The important series of hydrocarbons found in almost every petroleum mixture from any part of the world is
A. Paraffine
B. Aromatic
C. Asphaltene
D. Napthene

3. What is the other name for paraffin?

A. Naphthene
B. cyclo paraffin
C. alkane
D. propane

4. A self-contained breathing apparatus is used to

A. make underwater repairs to barges
B. determine if the air in a tank is safe for men
C. enter areas that may contain dangerous fumes or lack oxygen
D. resuscitate an unconscious person

5. Each inert gas system gas main must have an automatic shut down valve at the outlet of the gas production
plant. This valve must close automatically upon
A. cargo pump failure
B. blower failure
C. deck seal low water level
D. low inert gas temperature

6. Deficient oxygen content inside a confined space can be detected with

A. litmus paper
B. a combustible gas indicator
C. an oxygen breathing apparatus
D. an oxygen indicator

7. The total capacity of all slop tanks on an oil tanker normally should be
A. 4% of the total oil carrying capacity of ship
B. 3% of the total oil carrying capacity of ship
C. 1% of the total oil carrying capacity of ship
D. 2% of the total oil carrying capacity of ship

8. Which of the following is a cofferdam?

A. Chain locker
B. Pump room on an oil tanker
C. Deep tank
D. Slop tank on an oil tanker
9. Which of the following is a cofferdam?
A. Chain locker
B. Pump room on an oil tanker
C. Deep tank
D. Slop tank on an oil tanker

10. Calorific value is the quantity of heat ……………… when a unit quantity of fuel is burnt completely.
A. Observed
B. Required
C. Released

11. What is runaway polymerization?

A. Both exothermic and endothermic reactions
B. Endothermic self reaction
C. Exothermic self reaction
D. Self reaction

12. What is cathodic protection ?

A. Anodes placed in the stern of a ship
B. Protection of the hull of a ship
C. The prevention of corrosion by electrochemical techniques
D. Cathodes placed on the hull of a ship

13. Tanker pump room ventilation must be switched on at least how many minutes before entry ?
A. 15 minutes
B. One hour
C. 30 minutes
D. 10 minutes

14. What is the limitation of a combustible gas detector of catalytic combustion type?
A. It cannot be used for measurement in nitrogen
B. It cannot be used for measurement in methane
C. It cannot be used for measurement in oxygen
D. It cannot be used for measurement in air

15. Carbon dioxide extinguishes a fire by

A. Heat removal or cooling
B. Smothering or oxygen exclusion
C. Flame inhibition

16. The best portable fire extinguisher to be used to fight tank top fire in the engine-room is the:
A. foam type
B. water type
C. dry powder type

17. In a centrifugal pump:

A. The fluid moves in a direction opposite to the impeller.
B. The width of the discharge pipeline decreases outwards
C. The fluid moves in the same direction as the impeller
D. The discharge side has a negative pressure.
18. Ballast water exchange should be done:
A. at least 100 nautical miles from the nearest land and in waters at least 200 metres in depth
B. at least 200 nautical miles from the nearest land and in waters at least 100 metres in depth
C. at least 200 nautical miles from the nearest land and in waters at least 200 metres in depth
D. at least 100 nautical miles from the nearest land and in waters at least 100 metres in depth

19. The fitting at the end of a cargo line in a tank that allows suction to be taken close to the bottom of a tank is a
A. vacuum valve
B. strainer
C. suction end
D. bell-mouth

20. You are planning to use a crude oil washing system. What precaution must be taken with the source tank for
the washing machines?
A. At least one meter must be decanted from the source tank.
B. The oil in the source tank must be sampled for compatibility.
C. The inert gas system must lower the oxygen content in the source tank to a maximum of 12%.
D. The source tank must have been crude oil washed at least once in the past 150 days

21. An oil record book Part-I shall be retained onboard for a period of
A. 1 year since the last entry has been made
B. 1 year since the first entry has been made
C. 3 years since the first entry has been made
D. 3 years since the last entry has been made

22. ORB has to be regularly updated without delay and each completed page has to be
A. Signed by officer in charge and Master
B. Signed by chief officer and chief engineer
C. Signed by officer in charge and chief engineer
D. Signed by chief engineer and master

23. The explosive range of petroleum vapors mixed with air is

A. 0% to 1%
B. 12% to 20%
C. 1% to 10%
D. 10% to 15%

24. Combustible gas indicators operate by drawing an air sample into the instrument
A. where it is mixed with nitrogen
B. where its specific gravity is measured
C. where it is ignited by a sparking device
D. over an electrically heated platinum filament

25. The fresh air intake of the inert gas system

A. opens when there is excessive vacuum on the deck water seal
B. prevents the flue gas from falling below an oxygen content of 3%
C. enables outside air to mix with and to cool the hot flue gasses
D. allows the inert gas piping to be used for gas freeing the tanks
26. While using a combustible gas indicator, if the hydrocarbon content of the atmosphere exceeds the U.E.L.,
the needle of the indicator will
A. move to the maximum reading and immediately return to zero
B. remain at zero without moving
C. move halfway up the scale
D. move to the maximum reading and stay there

27. Emergency alarm signals are provided on tankers in case of the following; which one of these alarms will be
of major importance on a double-hull tank ship with empty ballast tanks?
A. A discharge in engine-room or pump room
B. When level of oxygen in inert gas entering tanks exceeds 5%
C. High level of oil residues in overboard discharge
D. High concentration of toxic or flammable vapors

28. A substance other than oil which if introduced in to marine environment is likely to create hazard to human
health, to harm living resources and marine life etc. is called as
A. Hazardous and dangerous substances
B. Hazardous and noxious substances
C. Toxic substances
D. Noxious substances

29. The chemicals used for cleanup of deck spill must not be allowed to enter water when a ship is in port
A. Unless approved chemicals are used for clean up operation
B. Unless authorized by master of the ship
C. Unless authorised by the ship manager
D. Unless permission has been obtained from harbour authorities

30. All marpol annex II cargoes' tank wash water discharge is prohibited in
A. North sea
B. Antarctic area
C. Baltic sea
D. Mediterranean sea

31. What is the Nitrogen content in asphalt of typical petroleum?

A. 2 - 8%
B. 1 - 15%
C. 0 - 2%
D. 3 -5%

32. The important series of hydrocarbons found in almost every petroleum mixture from any part of the world is
A. Paraffine
B. Aromatic
C. Asphaltene
D. Napthene

33. What is the other name for paraffin?

A. Naphthene
B. cyclo paraffin
C. alkane
D. propane
34. What is the flammable range ?
A. Vapor concentration below LEL
B. Vapor concentration above UEL
C. Vapor concentration range between LEL and UEL

35. What is runaway polymerization?

A. Exothermic self reaction
B. Self reaction
C. Endothermic self reaction
D. Both exothermic and endothermic reactions

36. What is Brush Discharge?

A. Brush Discharge is a diffused discharge from a highly charged non-conductive object to a single blunt
conductor that is more rapid than corona and releases more energy. It is not possible for a brush discharge
to ignite gases and vapours.
B. Brush Discharge is a diffuse discharge from a highly charged non-conductive object to a single blunt
conductor that is more rapid than corona and releases more energy. It is not possible for a brush discharge
to ignite gases and vapours, even if the mixtu
C. Brush Discharge is a diffuse discharge from a highly charged non-conductive object to a single blunt
conductor that is more rapid than corona and releases more energy. It is possible for a brush discharge to
ignite gases and vapours even if the mixture is
D. A broad electrical discharge from a conductor occurring when the potential difference is high but
not sufficient for a spark or arc.

37. Cargo pump rooms are fitted with:

A. one fan for ventilation
B. portable water sprinklers for fire fighting
C. fixed fire extinguishing system

38. Why are inhibitors added in the cargo?

A. Inhibitors are added by the ship staff before loading are Toxic. Inhibited cargoes often needs oxygen
hence should be carried in inerted tanks.
B. Inhibitors are added by the Terminal before loading are Toxic. Inhibited cargoes often needs
oxygen hence should not be carried in inerted tanks.
C. Inhibitors are added by the Terminal before loading are Non Toxic. Inhibited cargoes do not need oxygen
and can be carried in inerted tanks.
D. Once the cargo is inhibited, its temperature is never a concern for cargo carriage

39. Major danger occurs from a vapor cloud if it is:

A. dissipated in atmosphere
B. reduced in vapor concentration
C. ignited

40. 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
41.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 absence of external flame or sparks.

42. 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

43. 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

44. 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

45. Flash point is the ……………..temperature at which fuel oil catches fire.
A. Moderate
B. Maximum
C. Minimum

46. Percentage of hydrocarbons present in the raw fuel will NOT affect
A. The coloration of the fuel
B. Viscosity of the fuel
C. Water content
D. The hydrocarbons give the combustible nature.of the petroleum

47. Tank cling age 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
48. Cargoes should not be loaded in to a tank that is not specially for that duty if it exceeds normal atmospheric
pressure at
A. 60.0 Deg C (140 Deg F)
B. 15.6 Deg C (60 Deg F)
C. 25.0 Deg C (77 Deg F)
D. 37.8 Deg C (100 Deg F)

49. Which law states that at constant temperature, the amount of gas dissolved in a solution is directly
proportional to the pressure of the gas?
A. Pascal's Law
B. Laws of Motion
C. Fick's Laws of Diffusion
D. Henry's Law

50. 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

51. When loading several cargo types one must not handle more than:
A. Two grades at one time
B. Three grades at one time
C. Four grades at one time
D. Five grades at one time

52. In a centrifugal pump:

A. The discharge side has a negative pressure.
B. The fluid moves in a direction opposite to the impeller.
C. The fluid moves in the same direction as the impeller.
D. The width of the discharge pipeline decreases outwards.

53. The purpose of inert gas systems aboard tankers is to

A. allow sufficient oxygen in the tank to sustain life
B. prevent outside air from entering the tank
C. provide increase in cargo discharge pressure
D. comply with double hull pollution prevention regulations

54. As per MARPOL annex I requirements:

A. Only crudes and petrochemical products come within the definition of Oil
B. All items mentioned in Appendix 1 of annex 1 come under the category of oil
C. Only crude oil and black oils have restrictions on pumping out, the remaining products can be pumped
out at sea in limited quantities
D. Anything having viscosity greater than that of water is considered to be oil

55. A relief valve for a cargo pump is generally installed __________.

A. after the discharge valve
B. between the pump and discharge valve
C. after the suction valve
 D. between the pump and suction valve

56. Which statement is TRUE concerning the "flash point" of a substance?

A. It is lower than the ignition temperature.
B. It is the temperature at which a substance will spontaneously ignite.
C. It is the temperature at which a substance, when ignited, will continue to burn.
D. It is the temperature at which the released vapors will fall within the explosive range.

57. What does "IBC" stand for?

A. Imperial bulk code.
B. International bulk code.
C. International bulk chemical code.

58. 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

59. Flash point is the ……………..temperature at which fuel oil catches fire.
A. Moderate
B. Maximum
C. Minimum

60. Percentage of hydrocarbons present in the raw fuel will NOT affect
A. The coloration of the fuel
B. Viscosity of the fuel
C. Water content
D. The hydrocarbons give the combustible nature of the petroleum

61. Tank cling age 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

62. Cargoes should not be loaded in to a tank that is not specially for that duty if it exceeds normal atmospheric
pressure at
A. 60.0 Deg C (140 Deg F)
B. 15.6 Deg C (60 Deg F)
C. 25.0 Deg C (77 Deg F)
D. 37.8 Deg C (100 Deg F)

63. Which law states that at constant temperature, the amount of gas dissolved in a solution is directly
proportional to the pressure of the gas?
A. Pascal's Law
B. Laws of Motion
C. Fick's Laws of Diffusion
D. Henry's Law
64. 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

65. What is the flammable range?

A. Vapor concentration below LEL
B. Vapor concentration above UEL
C. Vapor concentration range between LEL and UEL

66. Key Features and Measurement of an Effective Safety Culture; identify one statement that identifies an
effective safety culture
A. Recognition that all accidents are preventable and only usually occur following unsafe actions or a failure
to follow established procedures
B. Individual seafarers assume responsibility for safety rather than relying on others to provide it
C. Through mutual respect, increasing confidence in the value of the safety culture results in a more
effective Safety Management System
D. A safety management system that is always setting targets for continuous improvement, with a goal
of zero accidents

67. 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.

68. 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

69. Organizational 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.

70. Measuring Current Performance and Behavior ; find the key statement
A. For an effective safety culture it is essential to have the means to monitor the company’s current
performance in order to identify ways in which safety can be improved.
B. The SMS required by the ISM Code provides such a mechanism
C. A readily comprehensible means of monitoring the effectiveness of safety is the Lost Time Incident
(LTI) rate, which is commonly used across many industries to measure personnel injuries
D. A Lost Time Incident is an incident which results in absence from work beyond the date or shift when it
occurred.
71. Which part is included to the Fire Triangle to extend it to the Fire Tetrahedon:
A. Heat
B. chain reaction
C. fuel
D. oxygen

72. What is expansion ratio of low expansion foam?

A. 20 : 1
B. 40 : 1
C. 5 : 1
D. 15:01
73. What does "NLS" mean?
A. Normal liquid substance
B. Not listed items in store.
C. Noxious liquid substance

74. 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.

75. Water extinguishes a fire by

A. Heat removal or cooling
B. Smothering or oxygen exclusion
C. Flame inhibition

76. What is the minimum requirement for CO2 gas to be released to fight a fire in the engine room?
A. 60% of CO2 to be discharged within two minutes
B. 85% of CO2 to be discharged within two minutes
C. 75% of CO2 to be discharged within two minutes

77. Which gas acts as a catalyst in the mechanical foam extinguisher?

A. Nitrogen gas
B. Halon Gas
C. CO2 gas

78. A hand portable CO2 fire extinguisher is effective on burning oil only __________.
A. if applied promptly
B. if applied in connection with foam
C. to prevent rekindling
D. if attempts to extinguish the fire with low velocity fog have failed

79. 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.

80. Which of the following type extinguishers should not be used in accommodation space?
A. dry powder
B. Foam
C. carbon dioxide
 D. water

81. Hydrogen vapors present in oil tankers are heavier than air
A. True
B. False

82. Allege is the distance from the underside of the deck is_______
A. The liquid surface
B. The bottom of the tank
C. The reference point
D. The sounding pipe
83. Hydrogen sulphide gas has no health hazard.
A. True
B. False

84. Before arrival load port tanks to be in _______condition

A. Gas free
B. Inserted
C. Segregated
D. Purged

85. Use of LPG lighter in tankers

A. Recommended
B. Not recommended
C. Sometimes
D. None of the above

86. On board tankers there is no marking to differentiate between hazardous area and non hazardous area
A. True
B. False

87. What is the marpol 73/78 convention about?

A. Hours of work
B. Safety equipment
C. Firefighting equipment
D. Pollution prevention

88. The procedure of locating the oil/water interface for the purpose of determining the volume of free water in a
shore tank or vessel compartment .it is also used to refer to the line of demarcation of the oil/water interface.
A. Water / cut measurement
B. Contamination test
C. Shore cargo quantity measurement
D. None of the above
89. The longer an oil fire is permitted to burn, the ______.
A. Easier it is to control
B. Harder it is to extinguish
C. Easier it is to extinguish
D. Less chance there is re-ignition

90. The purpose of pressure/vacuum valves is to______

A. Measure pressure/suction levels in cargo tanks
B. Enable load /discharge of oil without opening sighting ports
C. Provide for the flow of small volumes of tank atmospheres caused by variation in temperature
D. Provide an audible alarm in the event of pressure build up
91. During loading operation ullage and temp measuring equipment is showing low battery. which place can we
replace battery.
A. Can be replaced on tank area
B. Can be replaced near manifold area
C. Can be replace at pump room entrance
D. Can be replaced only inside accommodation

92. Displacement tonnage –expressed in tons it is the weight the water displaced by the vessel which in turn is
the weight of the vessel at that time.
A. True
B. False

93. An oil with an electrical conductivity greater than 50 Pico siemens/meter(PS/m) , which renders it incapable
of retaining a significant electrostatic charges is
A. A static accumulator oil
B. An electric nonconductor
C. A stoic non accumulator oil
D. None of the above

94. Procedures and equipment for the collection of hydrocarbon vapors from vessels tanks and the transfer to
shore side recovery equipment
A. Vapor recovery system (VRS)
B. Cargo recovery system
C. Vapour emission protection
D. None of the above

95. The buildup of wet solids on the impeller blade tips indicates problems
A. Baffles
B. Deck seal
C. Demister
D. None of the above
96. Out- turn certificate
A. A document issued by the receivers of cargo indicating the amount of cargo discharged
B. A document used for pilot information card of vessel
C. A document used for stating the ships maximum loading or discharging time
D. A document for estimated single voyage turn over time.

97. How much can the concentration of oxygen in the air decrease before it is dangerous to stay in the
atmosphere without breathing apparatus?
A. 10-15%
B. 21%
C. 5-10%
D. 2-3%

98. In scrubber tower, water absorbs _______ more readily at low temperatures.
A. SO2
B. SO3
C. SO2& SO3
D. None of the above

99. The time weighted average concentration of a substance to which workers may be repeatedly exposed for a
normal 8hrs work without adverse effect
A. Short term exposure limit
B. Threshold limit value
C. True limit value
D. Vapour exposure limit

100. An overdose of toxic petroleum vapor affects your sense of smell by______
A. Reducing it temporarily
B. Taking it away completely
C. Improving it temporarily
D. Improving it permanently

101. Approval of hot work inside cargo tanks can be issued after
A. No flammable gas present at work site and oxygen content is 11%
B. Adjacent compartment HC atmosphere is 15% volume
C. No flammable gas present at work site and oxygen content is 18%
D. HC content is <1% LEL and oxygen content is 21%

102. Inert gas after leaving the demister will consist the following
A. Oxygen more than 10%
B. SO4 less than 0.02%
C. Water vapour 1%
D. Both b&c
103. Before authorizing any confined space entry by chief officer of chief engineer , what checks have to be
carried out.
A. Fill and sign entry permits and rescue items available at the entrance of confined space
B. If interconnected tank if under IG these are depressurized
C. Portable gas meter working in good condition including personnel gas meter are in good order
D. All the above

104. Toxic substances can harm humans in 3 ways, ingestion / absorption / inhalation
A. True
B. False

105. Inert gas after leaving the demister will consist the following
1. Oxygen less than 10%
2. SO2 less than 0.02%
3. Water vapour 1%
4. Both b& c