Petroleum Refinery Engineering General Knowledge Quiz | Petroleum Refinery Engineering General Knowledge Short Questions & Answers

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Questions
41 Naphthenic acid is a/an ______________ compound?
A Sulphur
B Nitrogen
C Oxygen
D None of these

Answer: Oxygen
42 LPG when brought to atmospheric pressure & temperature will be a________________?
A Gas heavier than air
B Gas lighter than air
C Liquid lighter than water
D Liquid heavier than water

Answer: Gas heavier than air
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43 Gum formation in stored gasoline is mainly due to the ____________________?
A Alkylation of unsaturated
B Presence of sulphur
C Oxidation & polymerisation of unsaturated
D Higher aromatic content

Answer: Presence of sulphur
44 Smoke point of a good burning kerosene may be around _______________ mm?
A 0-5
B 20-25
C 60-75
D 100-120

Answer: 20-25
45 Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl isobutyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the____________________?
A Elimination of solvent drying facility
B Higher nitration temperature
C Lower solvent dilution ratio
D All A., B. & C.

Answer: All A., B. & C.
46 Which of the following has the highest flash point of all ?
A Diesel
B Kerosene
C Petrol
D Furnace oil

Answer: Furnace oil
47 Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?
A 50
B 70
C 90
D 140

Answer: 90
48 Which of the following is a Naphthene ?
A Butene
B Butadiene
C Cyclohexane
D Acetylene

Answer: Cyclohexane
49 Hydrocracking employs ___________________?
A High pressure & temperature
B Low pressure & temperature
C High pressure and low temperature
D High temperature and low pressure

Answer: High pressure & temperature
50 Which is almost absent in crude petroleum ?
A Olefins
B Mercaptans
C Naphthenes
D Cycloparaffins

Answer: Mercaptans
51 Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic____________________?
A Cracking
B Polymerisation
C Reforming
D Isomerisation

Answer: Reforming
52 ‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the _________________ of virgin naphtha into small boiling range cuts?
A Steam reforming
B Distillation
C Desulphurisation
D None of these

Answer: Distillation
53 Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its_________________?
A Molecular weight
B Aromatics content
C Both A. & B.
D Neither A. & B

Answer: Both A. & B.
54 Octane number (unleaded) of gasoline produced by isomerisation of butane may be about __________________?
A 45
B 55
C 70
D 90

Answer: 70
55 Molecular weight of crude petroleum may be around________________?
A 50
B 250
C 1500
D 5000

Answer: 1500
56 The characterisation factor of crude petroleum oil is around__________________?
A 3
B 11
C 22
D 28

Answer: 11
57 True vapour pressure of a petroleum fraction ________________ Reid vapour pressure?
A Is less than
B Is more than
C Is same as
D May be either more or less than

Answer: May be either more or less than
58 Flash point of diesel/kerosene (>50°C) is determined by the_______________?
A Abel apparatus
B Pensky-Martens apparatus
C Saybolt chromometer
D None of these

Answer: Abel apparatus
59 Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?
A Aromatics
B Mercaptans
C Paraffins
D Naphthenic acid

Answer: Aromatics
60 Cetane number of alpha methyl naphthalene is assumed to be_________________?
A 0
B 100
C 50
D ∞

Answer: 0

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