A good lubricant should have high _____________________ ?
A. Viscosity index
B. Volatility
C. Pour point
D. None of these
Petroleum Refinery Engineering
Name the hydrocarbon having the poorest oxidation stability ?
Name the hydrocarbon having the poorest oxidation stability ?
A. Naphthene
B. Olefin
C. Paraffin
D. Aromatics
Phenols are added in gasoline to____________________?
Phenols are added in gasoline to____________________?
A. Improve the octane number
B. Act as an antioxidant
C. Reduce its viscosity
D. Increase its pour point
Paraffin base crude oil as compared to asphalt base crude gives___________________?
Paraffin base crude oil as compared to asphalt base crude gives___________________?
A. Higher yield of straight run gasoline
B. Higher octane number gasoline
C. Lower viscosity index lube oil
D. Poorer yield of lube oil
Flash point of an oil gives an idea of the___________________?
Flash point of an oil gives an idea of the___________________?
A. Nature of boiling point diagram of the system
B. Amount of low boiling fraction present
C. Explosion hazards
D. All A., B. and C.
Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about ________________ ppm?
Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about ________________ ppm?
A. 1
B. 50
C. 5000
D. 10000
The reservoir rock containing petroleum has_________________?
The reservoir rock containing petroleum has_________________?
A. Low porosity
B. High permeability
C. High porosity
D. Both B. and C.
Which is an anticing compound ?
Which is an anticing compound ?
A. Amyl nitrate
B. Alcohols
C. Mercaptans
D. Pyridine
Polymerisation__________________?
Polymerisation__________________?
A. Produces i-octane from cracked gases containing i-butane and butene
B. Causes olefins to combine with each other
C. Causes aromatics to combine with each other
D. Is aimed at producing lubricating oil
Which of the following constituents present in petroleum is responsible for ash formation ?
Which of the following constituents present in petroleum is responsible for ash formation ?
A. Nitrogen compounds
B. Organometallic compounds
C. Sulphur compounds
D. Oxygen compounds