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Free download in PDF Petroleum Refinery Engineering General Knowledge Objective Type Questions & 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.
(21)
Gasoline extracted from natural gas (by compression and cooling) is called the ___________ gasoline?
[A]
Polymer
[B]
Unleaded
[C]
Casing head
[D]
Straight run
(22)
_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?
[A]
Sodium
[B]
Magnesium
[C]
Potassium
[D]
Calcium
(23)
Clay treatment is used to remove ___________________ ?
[A]
Salt from the crude oil
[B]
Colour & dissolved gases from cracked gasoline
[C]
Wax from lube oil
[D]
None of these
Answer: Wax from lube oil
(24)
Which of the following is the easiest to crack ?
[A]
Paraffins
[B]
Olefins
[C]
Naphthenes
[D]
Aromatics
(25)
Which parameter is used for the grading of paraffin waxes ?
[A]
Specific gravity
[B]
Melting point
[C]
Viscosity
[D]
Penetration number
(26)
Higher vapour pressure of gasoline indicates _________________?
[A]
Low flash point
[B]
High breathing loss
[C]
Both A. and B.
[D]
Neither A. nor B.
Answer: Neither A. nor B.
(27)
1 centistoke is equal to ______________ Redwood I seconds?
[A]
1
[B]
4.08
[C]
0.408
[D]
40.8
(28)
Which of the following fractions of petroleum contains maximum sulphur ?
[A]
Diesel
[B]
Gasoline
[C]
Naphtha
[D]
Atmospheric residue
Answer: Atmospheric residue
(29)
Good quality kerosene should have__________________?
[A]
Low smoke point
[B]
High smoke point
[C]
High aromatics content
[D]
Low paraffins content
(30)
Catalyst used in alkylation process is__________________?
[A]
Sulphuric acid
[B]
Nickel
[C]
Silica gel
[D]
Alumina
31
Cracking is___________________?
[A]
An exothermic reaction
[B]
An endothermic reaction
[C]
Favoured at very low temperature
[D]
None of these
Answer: An endothermic reaction
32
Concentration of H2SO4 catalyst in alkylation is kept between 90-98%, because H2SO4 having concentration?
[A]
Less than 90% promotes polymerisation
[B]
More than 98% promotes cracking
[C]
Both A. and B.
[D]
Neither A. nor B.
33
The conductivity of crude oil-water mixture depends on the__________________?
[A]
pH value
[B]
Water percentage
[C]
Temperature
[D]
All A., B. and C
34
Octane number of n-heptane is assumed to be_________________?
[A]
100
[B]
0
[C]
70
[D]
∞
35
Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners ?
[A]
PCM
[B]
Tar
[C]
Light diesel oil
[D]
Low viscosity furnace oil
36
Catalyst used in isomerisation process is __________________ ?
[A]
H2SO4
[B]
H3PO4
[C]
HF
[D]
AlCl3
37
Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene?
[A]
1
[B]
20
[C]
100
[D]
500
38
Catalyst used in the catalytic polymerisation is__________________?
[A]
Phosphoric acid on kieselguhr
[B]
Aluminium chloride
[C]
Nickel
[D]
Vanadium pentoxide
Answer: Phosphoric acid on kieselguhr
39
Crude topping column operates at ________________ pressure?
[A]
Atmospheric
[B]
10 atm
[C]
Vacuum
[D]
3 atm
40
A typical yield of diesel in straight run distillation of crude oil may be about ________________ percent?
[A]
35
[B]
8
[C]
18
[D]
28
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