Petroleum Refinery Engineering General Knowledge MCQs & Answers | Petroleum Refinery Engineering General Knowledge Quiz

Questions

81 A good lubricant should have high _____________________ ?

A Viscosity index

B Volatility

C Pour point

D None of these

View Answer

Answer: Viscosity index

82 Name the hydrocarbon having the poorest oxidation stability ?

A Naphthene

B Olefin

C Paraffin

D Aromatics

View Answer

Answer: Aromatics

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83 Phenols are added in gasoline to____________________?

A Improve the octane number

B Act as an antioxidant

C Reduce its viscosity

D Increase its pour point

View Answer

Answer: Act as an antioxidant

84 Paraffin base crude oil as compared to asphalt base crude gives___________________?

A Higher yield of straight run gasoline

B Higher octane number gasoline

C Lower viscosity index lube oil

D Poorer yield of lube oil

View Answer

Answer: Higher yield of straight run gasoline

85 Flash point of an oil gives an idea of the___________________?

A Nature of boiling point diagram of the system

B Amount of low boiling fraction present

C Explosion hazards

D All A., B. and C.

View Answer

Answer: Nature of boiling point diagram of the system

86 Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about ________________ ppm?

A 1

B 50

C 5000

D 10000

View Answer

Answer: 50

87 The reservoir rock containing petroleum has_________________?

A Low porosity

B High permeability

C High porosity

D Both B. and C.

View Answer

Answer: Both B. and C.

88 Which is an anticing compound ?

A Amyl nitrate

B Alcohols

C Mercaptans

D Pyridine

View Answer

Answer: Alcohols

89 Polymerisation__________________?

A Produces i-octane from cracked gases containing i-butane and butene

B Causes olefins to combine with each other

C Causes aromatics to combine with each other

D Is aimed at producing lubricating oil

View Answer

Answer: Causes olefins to combine with each other

90 Which of the following constituents present in petroleum is responsible for ash formation ?

A Nitrogen compounds

B Organometallic compounds

C Sulphur compounds

D Oxygen compounds

View Answer

Answer: Sulphur compounds

91 Aniline point is a property of the__________________?

A Diesel

B LPG

C Naphtha

D Gasoline

View Answer

Answer: Naphtha

92 Clay treatment of petroleum products __________________?

A Decolorizes & stabilises cracked gasoline

B Desulphurise straight run gasoline & kerosene

C Adsorb arsenic from feedstock to catalytic reforming

D All A., B. & C

View Answer

Answer: All A., B. & C

93 The main reaction in reforming is the _____________________?

A Dehydrogenation of naphthenes

B Hydrogenation of naphthenes

C Hydrocracking of paraffins

D Saturation of olefins

View Answer

Answer: Dehydrogenation of naphthenes

94 Percentage of straight run gasoline in a typical crude oil may be around________________?

A 6

B 18

C 38

D 52

View Answer

Answer: 52

95 Gasoline yield in catalytic reforming of naphtha may be about _________________ percent by weight?

A 85

B 98

C 65

D 50

View Answer

Answer: 85

96 The terminology used for the bottom most product from the vacuum crude distillation unit is______________?

A Residual crude

B Residuum

C Reduced crude

D Petrolatum

View Answer

Answer: Residuum

97 Waxes present in petroleum products_________________?

A Can be separated out by distillation

B Are not soluble in them

C Crystallise out at low temperature

D Decrease their viscosity

View Answer

Answer: Crystallise out at low temperature

98 Pyrolysis of kerosene or natural gasoline is done to produce mainly the___________________?

A Olefins and aromatics

B Lighter paraffins

C Stabilised gasoline

D Diesel

View Answer

Answer: Olefins and aromatics

99 Which of the following is the most important property for a jet fuel ?

A Cloud point

B Pour point

C Colour

D Freezing point

View Answer

Answer: Freezing point

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