chemical engineering petroleum refinery engineering MCQs – Page 6

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 Review each marked answer and report any item that may be outdated or unclear.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

101. Which parameter is used for the grading of paraffin waxes ?
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A. Penetration number

B. Viscosity

C. Specific gravity

D. Melting point

102. Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is________________?
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A. 3

B. 1

C. 2

D. 4

103. Reid vapour pressure of gasoline is the measure of its_________________?
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A. Vapour locking tendency

B. Cloud point

C. Carbon residue

D. Pour point

104. Which of the following has the highest flash point of all ?
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A. Furnace oil

B. Petrol

C. Kerosene

D. Diesel

105. With increase in the molecular weight of aromatic present in kerosene, its smoking tendency ?
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A. Increases

B. Decreases

C. Remain same

D. Is unpredictable

106. Clay treatment is used to remove ___________________ ?
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A. Colour & dissolved gases from cracked gasoline

B. Salt from the crude oil

C. Wax from lube oil

D. None of these

107. In petroleum refining, the process used for conversion of hydrocarbons to aromatics is________________?
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A. Hydrotreating

B. Catalytic cracking

C. Alkylation

D. Catalytic reforming

108. Penetration test determines the _____________ of the grease?
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A. Service temperature

B. Lubricating properties (e.g. oilness)

C. Variation in viscosity with temperature

D. Stiffness

109. Which of the following has the lowest cetane number ?
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A. i-paraffins

B. Aromatics

C. Naphthene

D. Olefins

110. Platforming is a ____________ process?
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A. Regenerative

B. Non-regenerative & fixed bed

C. Fluidised bed

D. Moving bed

111. Which of the following is the easiest to crack ?
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A. Naphthenes

B. Olefins

C. Aromatics

D. Paraffins

112. Which of the following has maximum hydrogen/carbon ratio (by weight) ?
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A. Fuel oil

B. Gasoline

C. Diesel

D. Naphtha

113. Petroleum liquid fuels having flash point greater than 66C is considered as safe during storage and handling. Which of the following has flash point > 66C ?
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A. Kerosene

B. Petrol

C. Naphtha

D. Heavy fuel oil

114. Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely miscible. It means that the aniline point of the diesel is _______________ the room temperature?
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A. More than

B. Same as

C. Either more or less; depends on the room temperature

D. Less than

115. The terminology used for the bottom most product from the vacuum crude distillation unit is______________?
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A. Petrolatum

B. Residual crude

C. Residuum

D. Reduced crude

116. Phenols are added in gasoline to____________________?
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A. Act as an antioxidant

B. Improve the octane number

C. Increase its pour point

D. Reduce its viscosity

117. Paraffins are desirable in lubricating oil, as it has got high_____________________?
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A. Smoke point

B. Viscosity index

C. Pour point

D. Viscosity

118. The most commonly used feed stock for the reforming reactor is ___________________?
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A. Residuum

B. Casing head gasoline

C. Heavy fuel oil

D. Straight run gasoline

119. Sweetening of petroleum product means the removal of ______________________?
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A. Wax

B. Sulphur & its compounds

C. Water

D. Organic impurities

120. Aniline point is a property of the__________________?
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A. LPG

B. Gasoline

C. Naphtha

D. Diesel

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