Final review sa ichem

A detailed illustration showing a marine engine along with diagrams of chemical structures and viscosity measurements, surrounded by elements related to marine chemistry like water, fuel tanks, and oil containers.

Ultimate Marine Chemistry Quiz

Test your knowledge and understanding of key concepts in marine chemistry with our comprehensive quiz. With 81 carefully crafted questions, this quiz is designed to challenge students, teachers, and professionals alike.

Covering topics from fuel properties to viscosity measurements.
Perfect for those preparing for exams or wanting to refresh their knowledge.
Engaging format with a variety of question types!

81 Questions20 MinutesCreated by ExploringOcean21

1. Lubricating oil must be converted into a _____ before it can burn

2. Fuels such as LNG must have a _____ blanket on top of the tank contents.

3. ¬¬¬¬¬it adversely affects the lubricating properties of diesel fuel by displacing the fuel.

4. What is the formula for A.P.I gravity? -

5. It is the measure of oil resistance to internal flow.

6. SI unit of dynamic viscosity.

7. SI unit of kinematic viscosity.

8. What is the standard formula for alkenes?

9. The standard formula for alkanes -

10. Calorific value is expressed in

11. It is used as a cooling media in large seawater cooled heat exchangers to cool the fresh water of the closed circuit

12. The internal cooling circuit, also known as

13. An important mineral that provides good nutrients for plants and aquatic organisms.

14. Is used in industrial processes to dissipate large amounts of heat.

15. This system receives and stores fuel and delivers it to settling tanks.

16. It provides a supply of lubricating oil to the various moving parts in the engine.

17. What is the formula of Specific Gravity?

18. What is measured in dynamic viscosity?

19. What is measured in kinematic viscosity?

20. What is mass per unit volume?

21. What does SI mean in unit?

22. What does the TBN mean?

23. What does the TAN mean?

24. Water content should optimally stay under

25. What do you call a compound having a single bond?

26. What do you call a compound having two bonds? –

27. What do you call a compound having three bond?

28. It is a point of temperature where the fluid or gas will ignite –

29. What part of the engine can be damaged if water is above the recommended limit?

30. What property of marine heavy fuel that affects the ignition quality

31. Are hydrocarbons in which the carbon atoms are held together by single bonds.

32. The standard formula for alkanes

33. A generic name for a wide range of products that are characterized by hundreds of base chemicals and additives.

The most common lubricating oils are __________ fractions although both synthetic and plant-based lubricating oils are used.

35. Lubricating oils are composed of _______________ with _____________ to impart specific properties to the oil.

36. The petroleum hydrocarbon distillate generally consists of ______________ compounds. -

37. A compound of petroleum hydrocarbon distillate having long carbon chains

38. A compound of petroleum hydrocarbon distillate having multiple carbon rings

39. Lubricating oils deteriorate in service in two primary ways: they become contaminated, and they undergo physical and chemical changes due to ______-

40. The most important physical property of lube oil.

41. It means all carbon atoms are bonded to the maximum amount of hydrogen atoms possible or basically saturated with hydrogens.

42. Contamination by _________________ is the source of almost all strong-acid contamination in lubricants

43. Examples of fuel combustion products

44. The factor that most often limits the lubricant’s useful life

45. What are the three types of test conducted to investigate lubricant degradation

The test of density, flash point, and foaming using instrumental analytical techniques.

47. A term called for the test of lubricant deterioration to check its viscosity and trace metals, particulates and ash in lubricants

48. A test of direct observation to the lubricant condition

49. Lubricant oils for internal combustion engines frequently contain ________ to combat acidity. –

50. It is defined as the amount of heat produced in kilo joules the unit is kilo joule (kJ). -

51. Unit of calorific value

52. Recommended water content –

53. Water above ______ will damaged the engine

54. Fuel contamination to lubricating oil will _______ the ________ of lube oil

55. _________ is indicator of diesel oil ignition quality -

56. What property of marine heavy fuel that affects the ignition quality

57. What property that causes the delay of ignition of a diesel oil

58. What property of marine heavy fuel oil (residual fuel oil) that causes incomplete combustion –

59. When the marine heavy fuel ignition quality index is high it will cause

60. Fuel contamination in the lube oil is from

61. What part of the engine that can be damaged if water is above the recommended limit?

62. If the CCAI is higher, this means –

63. When the ignition quality index of marine heavy fuel oil is low, it will cause

64. Effects of TAN other than corrosion in marine engines

65. When the ignition quality index of a marine diesel oil is low, it will cause

66. _______ use of fuel oil when starting the engine and warming up is the principal cause of dilution in the lube

67. What type of additive which provide some alkalinity?

68. Defined as mass per volume of a fluid

69. HFO Density

70. There are two types of viscosity -

71. Obtained by reformulating Newton's Law

72. Sometimes referred to as Absolute viscosity is obtained by dividing the Shear stress by the rate of shear strain. (cP) -

73. A viscosity measured by timing the flow of a known volume of fluid from a viscosity measuring cup. (cSt)

74. The temperature at which a crude oil will no longer flow

This essentially may be described as frothing/bubbling effect caused by compressed air blown through the delivery hose

76. Petroleum products have a high rate of ______________ which must be taken into account when several thousand tons are transferred or purchased.

77. What is the sulfur limit after 2020?

78. He should calculate and check which bunker/fuel oil tanks are to be filled, he will also call a meeting 24hrs before bunkering

79. According to IMO MEPC.182, samples should be taken not in the barge but instead in the -

80. Refers to a type of lubrication regime that occurs when both boundary lubrication and hydrodynamic lubrication are present in a system.

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