chemical engineering petroleum refinery engineering MCQs – Page 14

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 Review each marked answer and report any item that may be outdated or unclear.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
261. Mercaptans are________________?
comments icon0

A. Undesirable in petrol, as they reduce its octane number

B. Added in LPG cylinders to detect gas leakage by its smell

C. All A., B. and C.

D. Low boiling sulphur compounds

262. Bottom product of atmospheric pressure crude oil distillation column is termed as________________?
comments icon0

A. Residuum

B. Reduced crude

C. Heavy ends

D. Asphalt

263. Which of the following rock favors petroleum formation?
comments icon0
A. Sedimentary rock

B. None of these

C. Metamorphic rock

D. Igneous rock

264. Aniline point of the diesel is a measure of its ______________ content?
comments icon0

A. Olefin

B. Aromatic

C. Naphthene

D. Paraffin
265. _____________ determination is not a very significant and important test for gasoline?
comments icon0
A. Viscosity

B. Octane number

C. Reid vapor pressure

D. Gum & sulphur content

266. Performance number of a liquid fuel is related to its __________________?
comments icon0

A. Knocking tendency

B. Sulphur content

C. Wax content

D. Spontaneous ignition temperature
267. Pick out the wrong statement?
comments icon0

A. Multigrade lubricating oils have high viscosity index

B. Naphthenic oil has very low viscosity index

C. Paraffinic oil has very high viscosity index

D. High viscosity index means a large change in viscosity with change in temperature
268. Which one is preferred for aircraft engine ?
comments icon0

A. High freezing point aviation fuel

B. None of these

C. High viscosity index lube oil

D. Low viscosity index lube oil

269. Pour point and freezing point is equal for__________________?
comments icon0

A. Petrol

B. Crude petroleum

C. Water

D. Diesel

270. 95% (by volume) of LPG at 760 mm Hg pressure will evaporate at __________ C?
comments icon0
A. 2

B. -40

C. 30

D. 55

271. A source rock that is too immature to generate petroleum in its natural setting is known as__________?
comments icon0
A. Effective Source Rock

B. Unconventional Source Rock

C. All of above

D. Potential Source Rock

272. For gasoline, the flash point (<50C) is determined by the______________________?
comments icon0

A. Saybolt chromometer

B. Abel apparatus

C. None of these

D. Pensky-Martens apparatus

273. Pick out the wrong statement?
comments icon0

A. Higher specific gravity of petrofuels means higher C/H ratio

B. Aromatics have higher specific gravity than paraffins

C. Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre)

D. Gross calorific value (GCV) of petrofuels is equal to (12400 2100 ?2) where, ? is the specific gravity of the fuel at 15.5C

274. Specific gravity of a petroleum product gives an indication of its _________________?
comments icon0

A. Ease of atomisation

B. Sulphur content

C. Hydrocarbon content type (aromatic or paraffinic)

D. Degree of refinement

275. Crude oil is subjected to vacuum distillation in the last stage, because_________________?
comments icon0

A. ompose</strong>

B. None of these

C. High purity products can be obtained thereby

D. High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may

E. Lighter/low boiling products are prone to thermal decomposition

276. Straight run petrol as compared to methyl/ethyl alcohol has_________________?
comments icon0
A. Lower octane number

B. Lower calorific value

C. Higher specific gravity

D. Higher ignition temperature

277. Which of the following has the lowest viscosity (at a given temperature) of all ?
comments icon0

A. Lube oil

B. Kerosene

C. Naphtha

D. Diesel

278. DLS stands For_______?
comments icon0
A. Dogleg severity

B. Drill line stream

C. All of Above

D. Drill line system

279. Hydrofining is the most recent and effective method for the____________________ ?
comments icon0

A. Improvement of viscosity index

B. Removal of sulphur

C. Improvement of smoke point

D. Reduction of breathing loss

280. Maximum use of petroleum coke is in__________________?
comments icon0
A. Carbon electrode manufacture

B. Adsorption refining operation

C. Iron ore reduction

D. Fuel gas manufacture