Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about _____________ kms?
A. 0.1 to 0.5
B. 1.5 to 4.5
C. 7.5 to 12.5
D. 15-20
Petroleum Refinery Engineering
The order of preference for feedstock to a catalytic reformer is _________________ ?
The order of preference for feedstock to a catalytic reformer is _________________ ?
A. Catalytic naphtha – coking naphtha – virgin naphtha
B. Coking naphtha – virgin naphtha – catalytic naphtha
C. Virgin naphtha – catalytic naphtha – coking naphtha
D. Virgin naphtha – coking naphtha – catalytic naphtha
Deoiling of wax is done by its _________________?
Deoiling of wax is done by its _________________?
A. Heating
B. Cooling
C. Solvent extraction
D. Both B. & C.
Which of the following processes is used for the production of petroleum coke ?
Which of the following processes is used for the production of petroleum coke ?
A. Stabilisation
B. Visbreaking
C. Cracking
D. Reforming
Olefins are_________________?
Olefins are_________________?
A. Saturated hydrocarbons
B. Unsaturated cyclic compounds (hydrocarbons)
C. Present in substantially good quantity in crude petroleum
D. None of these
Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________?
Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________?
A. 80
B. 87
C. 92
D. 97
Feedstock for polymerisation is__________________?
Feedstock for polymerisation is__________________?
A. Naphtha
B. Cracked gases rich in C2 & C4 olefins
C. Low boiling aromatics
D. None of these
Which of the following is an additive used for improving the cetane number of diesel ?
Which of the following is an additive used for improving the cetane number of diesel ?
A. Tetraethyl lead
B. Tetramethyllead
C. Ethyl nitrate or acetone
D. None of these
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?
A. Gives higher yield of petrol
B. Lower octane number of petrol
C. Higher sulphur content in the product
D. Higher gum forming material in petrol
Which of the following is the most widely used cracking process in oil refineries ?
Which of the following is the most widely used cracking process in oil refineries ?
A. Dubbs process
B. T.C.C. moving bed process
C. Fluidised bed catalytic cracking process
D. Houdry’s fixed bed process