Petroleum Refinery Engineering

101. Higher viscosity of lubricating oil usually signifies

1. Lower Reid vapour pressure
2. Higher acid number
3. Higher flash point and fire point
4. Lower flash point and fire point

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102. Highest quality bitumen is produced from the _________ crude oil.

1. Paraffinic
2. Naphthenic
3. Intermediate
4. Mixed

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103. Hydrocracking employs

1. High pressure & temperature
2. Low pressure & temperature
3. High pressure and low temperature
4. High temperature and low pressure

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104. Hydrofining is the most recent and effective method for the

1. Removal of sulphur
2. Improvement of smoke point
3. Reduction of breathing loss
4. Improvement of viscosity index

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105. Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of _________ kcal/kg.

1. 600-750
2. 250-350
3. 1000-1500
4. 2000-2500

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106. Hydrogen percentage (by weight) in crude petroleum may be about

1. 5
2. 15
3. 25
4. 35

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107. Illuminating characteristics of kerosene is expressed by its

1. Smoke point
2. Aniline point
3. Luminosity number
4. Aromatic content

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108. In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction

1. Heavy distillates
2. Intermediate distillates
3. Light ends
4. Residues

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109. In case of liquid petrofuels, momentary combustion is observed at its

1. Flash point
2. Preheating temperature corresponding to viscosity of 25 centistokes
3. Flame temperature
4. Fire point

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110. In catalytic alkylation, higher iso-butane to olefin ratio gives

1. Low final boiling point product
2. Higher yield
3. Both (A) and (B)
4. Neither (A) nor (B)

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