OCTO Exit Exam Question and Answer updated set - 6

This OCTO exit exam questions and answer quiz contain questions Answer

If you find any questions incorrect, please let us know by Clicking here.

31. Inert gas after leaving the demister will consist of the following

a)   Oxygen less than 5%

b)   SO2 less than 2.0%

c)   Water vapor 1%

d)   Both A & B


32. How much volume of air needs to be changed in pump room

a)   10 vol/hr.

b)   25 vol/hr.

c)   20 vol/hr.

d)   15 vol/hr.


33. Fixed foam monitors having  a operating  capacity_____L/min

a)   1250

b)   1450

c)   1150

d)   1650


34. In tankers, the central equipment is available either for installation in _____locations.

a)   Hazardous

b)   Non-hazardous

c)   Under – pressurized

d)   All of the above


35. Chapter 4 MARPOL annex VI was adopted on

a)   17th   August 2009

b)   1st March 2012

c)   1St January 2010

d)   15th   July 2011


36. The physical data of a liquid chemical can be found on_____

a)   MSDS (material safety data sheets)

b)   The Information supplied by the manufacturer

c)   ICS cargo data sheet

d)   All of these a), b) & c)


37. Gas testing onboard tankers can be carried out with the following equipment onboard

a)   MMC

b)   Thermometer

c)   Gas instrument

d)   Sample


38. What % of air is made up by oxygen?

a)   78%

b)   21%

c)   100%

d)   4%

39. Does the muster list and the emergency instruction contain information relevant only to the deck officers?

a)   Yes

b)   No

c)   No, all crew members and other personnel onboard

d)   No relevant to all offices


40. COW operation is conducted during?

a)   Discharging operation

b)   Tank cleaning operation

c)   Loading operation

d)   Gas freeing operation


41. Before cargo operations start the master should establish liaison between the ship and______

a)   The terminal

b)   The flag state administration

c)   The port authority

d)   The arbor controls


42. If at sea the inert gas low pressure alarm is activated it may be necessary to conduct____

a)   Cargo heating operations to raise the pressure

b)   Cargo transfer operation to raise the pressure

c)   Inert gas topping up operations

d)   Reduce engine speed to allow safe ingress of atmospheric air


43. When oil temperature rises, the volume _______

a)   Varies

b)   Reduces

c)   Increases

d)   Remain the same


44. An important publication required to be approved by the flag state and carried onboard chemical tankers

a)   The procedure and arrangements manual

b)   The operation manual

c)   The arrangements manual

d)   The procedures manual


45. The low velocity fog applicator used in conjunction with the all-purpose firefighting nozzle, should always be_______________

a)   Stored in the rack when not in actual use

b)   Attached to the nozzle by the chain

c)   Coated with heavy grease to prevent corrosion

d)   Left in place in the all –purpose nozzle


46. Which safety device is fitted on the inert gas scrubber tower to monitor the efficient operation of the plant?

a)   The inert gas low flow alarm

b)   The scrubber tower high level alarm

c)   The scrubber tower low pressure & non flow alarm of cooling tower

d)   Both (B) & (C)


47. In IG plant, prior starting switch on the oxygen analyzer at least ___hours before start up.

a)   2

b)   3

c)   4

d)   5

48. Start up the scrubber tower cooling water pump and put water onto the scrubber ___mins before starting the blowers 

a)   90

b)   15

c)   60

d)   45


49. Start the blower at __minutes before IG is required by the deck operators.

a)   30

b)   90

c)   15

d)   45


50. When loading by gravity the last valve to be opened should be___

a)   Shore tank valve

b)   Ships manifold valve

c)   For the cargo tank to be loaded into

d)   The ships drop line valve


51. Any hawser by which a vessel is secured to a dock or mooring. It may be made of natural materials (manila), synthetics, (polypropylene), or wire. Under certain circumstances the anchor chain is detached from the anchor and a section of that is used to secure the vessel

a)  Breast line

b)  Spring line

c)  Heaving line

d)  Mooring line


52. Temperature control of cargoes means _____

a)  Applying heat in a controlled manner

b)  Allowing the cargo to adopt ambient temps.

c)  Allowing the cargo to heat naturally

d)  Monitoring the cargo temp.


53. The narrow, empty space between two adjacent watertight or oil tight compartments. This space is designed to isolate the two compartments from each other and / or provide additional buoyancy. This space is called ____

a)   Void tank

b)   Buoyancy tank

c)   Reserve fuel tank

d)   Cofferdam


54. Where the inert gas is tapped which is led to the oxygen analyzer?

a)   At the inert gas fan discharge monometer connection

b)   At the inert gas discharge line to the bulkhead valve

c)   At the inert gas line from scrubber to inert gas fan (suction line)

d)   At the boiler uptake


55. How should pinching of the cargo hose between the vessel and the dock be prevented?

a)   Tying of the topping lifts and runners to winch heads

b)   Laying out an excess length of hose on deck

c)   Adjusting the hose supports

d)   Install hose preventers


56. In a sample of ethyl acetate (CH3 COOC2H5) THE TWO oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?

a)   One of the oxygen atoms has gained electrons

b)   One of the oxygen atoms has gained two neutrons

c)   The two oxygen atoms are isotopes

d)   The two oxygen atoms are isobars


57. Which MARPOL annex governs the transportation of the chemical cargoes internationally?

a)   V

b)   II

c)   III

d)   I


58. Entry into cargo tank can be made when the atmosphere is______

a)   HC more than 1% LFL/O2=21%/CO=1PPM/H2S=3PPM

b)   HC less Than 1% LFL/O2=21%/CO=50PPM/H2S=1PPM

c)   HC less Than 1% LFL/O2=18%/CO=50PPM/H2S=1PPM

d)   HC less Than 1% LFL/O2=21%/CO=0PPM/H2S=0PPM


59. Which of the valves listed should be used either in the fully opened or the fully closed position?

a)   Any needle valves

b)   Any check valves

c)   A globe valves

d)   A gate valves


60. Whose permission to be obtained prior de-ballasting of ballast tanks at load/disch port

a)   Master

b)   2nd /off

c)   Loading /berth master

d)   CH/off

Post a Comment

* Please Don't Spam Here. All the Comments are Reviewed by Admin.