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“Petroleum Engineering frequently Asked Questions by expert members with experience in Petroleum Engineering. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”

340 Petroleum Engineering Questions And Answers

261⟩ Pick out the correct statement. A. Paraffins have higher octane number than corresponding iso-paraffin. B. Paraffins have lower smoke point than aromatics. C. Suitability of kerosene as a fuel & as an illuminant may be determined by char value test. D. Aviation fuel should have very high cloud point.

Option B

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262⟩ Octane numbers of motor gasoline used in India and America are respectively A. 87 & 94 B. 94 && 87 C. 94 && 100 D. 83 && 100

Option A

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263⟩ Catalyst used in the isomerisation is A. aluminium chloride B. alumina C. nickel D. phosphoric acid

Option A

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264⟩ Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'. A. 1 B. 5 C. 15 D. 25

Option B

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265⟩ Pick out the correct statement about catalytic polymerisation. A. H2SO4 polymerisation process gives gasoline rich in unsaturates. B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho H3PO4 formation, which are inactive. C. both (a) and (b) D. neither (a) nor (b)

Option B

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266⟩ Reid vapour pressure of gasoline is the measure of its A. pour point B. cloud point C. vapour locking tendency D. carbon residue

Option C

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267⟩ Boiling range of motor gasoline is an indication of the A. case of starting B. rate of acceleration C. vapour locking tendency D. all (a), (b) and (c)

Option B

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268⟩ Performance number of a liquid fuel is related to its A. wax content B. spontaneous ignition temperature C. knocking tendency D. sulphur content

Option B

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269⟩ High aniline point of diesel indicates that, it A. is highly aromatic. B. has a large ignition delay. C. is highly paraffinic. D. has a low diesel index.

Option C

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270⟩ Naphtha yield in straight run distillation of crude oil may be about __________ percent. A. 2 B. 6 C. 12 D. 18

Option B

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271⟩ Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is A. propane. B. diethylene glycol. C. aqueous solution (10% water) of diethylene glycol. D. methyl ethyl ketone (MEK).

Option C

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272⟩ Mercapsol and Unisol processes are meant for the A. dearomatisation of kerosene B. removal of mercaptans C. dewaxing D. decoloration

Option B

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273⟩ Solvent used in Edeleanu process is A. furfural B. propane C. liquid SO2 D. phenol

Option C

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274⟩ Which of the following is the most suitable feed for platforming process (reforming)? A. Olefinic hydrocarbon B. Naphtha C. Fuel oil D. Atmospheric residue

Option A

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275⟩ Naphthenic acid is represented by A. CnH2n+2O2 B. CnH2n-2O2 C. CnH2n+2O2 (n ≥ 6) D. CnH2n+6O2 (n ≤ 6)

Option B

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276⟩ Name the endothermic reaction out of the following A. Catalytic cracking. B. Hydrocracking. C. Dehydrogeneration of naphthene to produce aromatic. D. Catalytic polymerisation.

Option C

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277⟩ Natural gasoline is produced A. from oil wells B. in oil refineries C. by natural gas stripping D. none of these

Option C

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278⟩ Petroleum coke is commercially produced by the __________ process. A. hydrocracking B. visbreaking C. fluid catalytic cracking D. delayed coking

Option D

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279⟩ Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatisation by liquid SO2 extraction (Edeleanu process), its smoke point may become __________ mm. A. 5 B. 10 C. 25 D. 100

Option C

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280⟩ Main constituent of natural gas is A. CH4 B. C2H2 C. C2H4 D. C2H6

Option A

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