chemical engineering petroleum refinery engineering MCQs – Page 4

Practise multiple-choice questions from chemical engineering petroleum refinery engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering petroleum refinery engineering Mcqs

61. Which of the following is the most important property for a jet fuel ?
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A. Freezing point

B. Colour

C. Cloud point

D. Pour point

62. Which of the following has the lowest flash point of all ?
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A. Kerosene

B. Diesel

C. Furnace oil

D. Petrol

63. True boiling point apparatus is used for the__________________?
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A. Evaluation of oil stocks

B. None of these

C. Determination of true vapour pressure

D. Determination of characterisation factor

64. Quinoline is a/an ________________ compound ?
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A. None of these

B. Nitrogen

C. Sulphur

D. Oxygen

65. Extractor temperature is maintained at -20C in Edeleanu process to reduce the _________________ of kerosene?
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A. Paraffins

B. Smoke point

C. Aromatics

D. Naphthenes

66. High aniline point of diesel indicates that, it _____________________?
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A. Has a large ignition delay

B. Is highly paraffinic

C. Has a low diesel index

D. Is highly aromatic

67. Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of ____________________?
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A. Discoloration

B. Coking

C. Thermal cracking

D. Gum formation

68. Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a salty crude ?
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A. 1

B. 25

C. 15

D. 5

69. Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene?
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A. 100

B. 1

C. 500

D. 20

70. Thermofor catalytic cracking process is a ______________ process?
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A. Non-catalytic

B. Fluidised bed

C. Fixed bed

D. Moving bed

71. Which of the following is an additive used for improving the cetane number of diesel ?
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A. None of these

B. Tetraethyl lead

C. Tetramethyllead

D. Ethyl nitrate or acetone

72. Breathing loss on storage of gasoline occurs due to the _____________________?
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A. Presence of unsaturated air

B. Fluctuation of ambient temperature during day and night

C. Both A. and B.

D. Neither A. nor B.

73. Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about ________________ mm Hg absolute?
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A. 1 to 5

B. 450 to 500

C. 30 to 80

D. 250 to 350

74. ____________ is not an important refinery process for upgrading the quality of lubricating oil ?
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A. Deoiling

B. Clay treatment

C. Hydro-treatment

D. Solvent refining

75. Aniline point is the _________________?
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A. Characteristic property of diesel & lubricating oils

B. Measure of aromatic content of oil

C. Both A. and B.

D. Neither A. nor B.

76. Sulphur content in lighter and heavier petroleum products is generally determined respectively by _______________?
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A. Quartz tube method and lamp method

B. Bomb method and quartz tube method

C. Bomb method and lamp method

D. Lamp method and bomb method

77. Maximum viscosity of tar/PCM/fuel oil for easy and efficient atomisation in conventional burner is _______________ centistokes (or 100 Redwood I seconds) ?
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A. 50

B. 5

C. 100

D. 25

78. The amount of tetraethyl lead added to improve the octane number of motor gasoline is around ______________ c.c per gallon of petrol?
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A. 3

B. 300

C. 1000

D. 3000

79. Both asphalt and wax are produced by ______________ base crude oils?
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A. Mixed

B. Asphalt

C. Naphthenic

D. Paraffin

80. Testing of the knocking characteristics of petrofuels is done in a _________________ engine ?
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A. Stirling

B. Diesel

C. Carnot

D. CFR (Co-operative fuel research)

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