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Free download in PDF Petroleum Refinery Engineering General Knowledge Multiple Choice Questions(MCQs) & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(1)
Which of the following reactions is undesirable in the production of catalytically reformed gasoline ?
[A]
Dehydrogenation of Naphthene
[B]
Dehydrogenation of lower paraffins
[C]
Dehydrocyclization of higher paraffins
[D]
Isomerisation of paraffins
Answer: Dehydrogenation of lower paraffins
(2)
The most important property for a jet fuel is its________________?
[A]
Viscosity
[B]
Freezing point
[C]
Calorific value
[D]
Flash point
(3)
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about _______________ mm Hg (absolute)?
[A]
5-10
[B]
30-80
[C]
150-250
[D]
350-400
(4)
Which of the following is not an important property of fuel oil/furnace oil ?
[A]
Sulphur content
[B]
Viscosity
[C]
Aniline point
[D]
Flash point
(5)
High aniline point of a petrofuel (say diesel) indicates that ________________?
[A]
It is highly aromatic in nature
[B]
It is highly paraffinic in nature
[C]
It has a very low diesel index
[D]
Its ignition quality is very poor
Answer: It is highly paraffinic in nature
(6)
The vacuum maintained in vacuum distillation unit for reduced crude is about _______________ mm Hg?
[A]
1.2
[B]
12
[C]
120
[D]
700
(7)
Liquefied Petroleum Gas (LPG) is mainly a mixture of _____________________?
[A]
Propane & butane
[B]
Methane & ethane
[C]
High boiling olefins
[D]
High boiling naphthenes
(8)
Which of the following has the lowest cetane number ?
[A]
Aromatics
[B]
i-paraffins
[C]
Naphthene
[D]
Olefins
(9)
Pressure & temperature maintained in catalytic cracking is about__________________?
[A]
2 atm & 500°C
[B]
10 atm & 500°C
[C]
30 atm & 200°C
[D]
50 atm & 750°C
(10)
In catalytic cracking, the___________________?
[A]
Gasoline obtained has a very low octane number
[B]
Pressure & temperature is very high
[C]
Gasoline obtained has very high aromatic content
[D]
Gasoline obtained has very high amount of gum forming compounds
Answer: Gasoline obtained has very high aromatic content
(11)
Carbon percentage (by weight) in crude petroleum may be about_________________?
[A]
85
[B]
48
[C]
32
[D]
28
(12)
CnH2n is the general formula for_______________?
[A]
Olefins
[B]
Naphthenes
[C]
Both A. and B.
[D]
Neither A. nor B.
(13)
Which of the following has maximum hydrogen/carbon ratio (by weight) ?
[A]
Naphtha
[B]
Gasoline
[C]
Diesel
[D]
Fuel oil
(14)
Reforming converts_________________?
[A]
Olefins into paraffins
[B]
Naphthenes into aromatics
[C]
Naphthenes into olefins
[D]
Naphthenes into paraffin
Answer: Naphthenes into aromatics
(15)
Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of ____________________?
[A]
Thermal cracking
[B]
Gum formation
[C]
Coking
[D]
Discoloration
(16)
The best method of determining sulphur in crude oil is by the _______________ method?
[A]
Kjeldahl
[B]
Dumas
[C]
Bomb calorimeter
[D]
Junkers calorimeter
(17)
Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________________ ptb (pounds per thousand barrel) ?
[A]
0.03
[B]
3
[C]
35
[D]
70
(18)
Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher ______________ compared to the dry natural gas?
[A]
Unsaturated hydrocarbon content
[B]
Calorific value
[C]
Quantity of propane
[D]
Quantity of butane
(19)
Which of the following has the minimum °API gravity of all ?
[A]
Furnace oil
[B]
Petrol
[C]
Diesel
[D]
Kerosene
(20)
LPG stands for ____________________?
[A]
Liquefied petroleum gas
[B]
Liquid petrol gas
[C]
Liquid petroleum gas
[D]
Liquefied petrol gas
Answer: Liquefied petroleum gas
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