chemical engineering petroleum refinery engineering MCQs – Page 7

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 Review each marked answer and report any item that may be outdated or unclear.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
121. Solvent used for dewaxing of petroleum products are____________________?
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A. Furfural

B. Methyl ethyl ketone (MEK)

C. Propane

D. Both B. & C.

122. Reforming converts_________________?
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A. Naphthenes into aromatics

B. Naphthenes into paraffin

C. Naphthenes into olefins

D. Olefins into paraffins

123. Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?
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A. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on

B. Smoking tendency of hydrocarbons increases in the order: paraffins ? isoparaffins ?

C. Smoking tendency of paraffins increases with decrease in its molecular weight

D. Smoking tendency of aromatics decreases with increase in its molecular weight

E. hthenes ? aromatics

F. ition of double bond

124. Olefins are_________________?
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A. Saturated hydrocarbons

B. Present in substantially good quantity in crude petroleum

C. Unsaturated cyclic compounds (hydrocarbons)

D. None of these
125. Cetane number of diesel used in trucks may be about __________________?
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A. 85

B. 14

C. 50

D. 35

126. ________________ treatment is done for appreciable improvement in viscosity index of lubricating oil?
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A. Alkali

B. Clay

C. Acid

D. Solvent extraction
127. Pressure & temperature maintained in catalytic cracking is about__________________?
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A. 50 atm & 750C

B. 2 atm & 500C

C. 10 atm & 500C

D. 30 atm & 200C

128. 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?
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A. 1

B. 5000

C. 50

D. 10000

129. Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about _____________ kms?
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A. 1.5 to 4.5

B. 0.1 to 0.5

C. 15-20

D. 7.5 to 12.5

130. Which of the following processes consumes hydrogen ?
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A. Visbreaking

B. Fluid catalytic cracking

C. Propane deasphalting

D. None of these

131. Which of the following is a non-regenerative fixed bed catalytic reforming process ?
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A. Thermofor catalytic reforming

B. Hyperforming

C. Hydroforming

D. Platforming
132. Flash point of motor gasoline may be around ______________ C?
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A. 150

B. 100

C. 10

D. 45
133. Which of the following reactions is undesirable in the production of catalytically reformed gasoline ?
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A. Dehydrocyclization of higher paraffins

B. Isomerisation of paraffins

C. Dehydrogenation of lower paraffins

D. Dehydrogenation of Naphthene

134. The proper arrangement of the petroleum fractions in order of their boiling points is __________________ ?
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A. Petrol > lubricating oil > diesel > LPG

B. Petrol > diesel > LPG > lubricating oil

C. Lubricating oil > diesel > petrol > LPG

D. Lubricating oil > petrol > diesel > LPG

135. Which one is used to determine the colour of petroleum products ?
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A. Cleveland apparatus

B. None of these

C. Saybolt chromometer

D. Colour comparator
136. Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatization by liquid SO2 extraction (Edeleanu process), its smoke point may become _______________________ mm?
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A. 10

B. 25

C. 5

D. 100

137. Tetra-ethyl lead is added in gasoline to ______________________?
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A. Reduce the pour point

B. Reduce gum formation

C. Increase its octane number

D. Increase its smoke point
138. Cetane number of alpha methyl naphthalene is assumed to be_________________?
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A. ?

B. 0

C. 100

D. 50

139. Water separometer index (modified) (WSIM) of a petrofuel is the measure of its____________________?
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A. Water absorbing capacity from atmosphere

B. Water separation characteristics

C. Water content

D. Emulsification tendency

140. Catalyst used in catalytic reforming is__________________?
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A. Iron

B. Nickel

C. Platinum on alumina

D. Aluminium chloride