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.
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The most widely used crude topping column in refineries is the ______________ column?
The most widely used crude topg column in refineries is the ______________ column?A. Bubble-cap
B. Packed bed
C. Fluidised bed
D. Perforated plateCetane number of diesel used in trucks may be about __________________?
Cetane number of diesel used in trucks may be about __________________?A. 50
B. 14
C. 35
D. 85Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’ ?
Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’ ?A. 1
B. 5
C. 15
D. 25Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely miscible. It means that the aniline point of the diesel is _______________ the room temperature?
Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely miscible. It means that the aniline point of the diesel is _______________ the room temperature?A. More than
B. Less than
C. Same as
D. Either more or less; depends on the room temperaturePreheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about _______________ °C ?A. 50
B. 70
C. 90
D. 140Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has__________________?
Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has__________________?A. High pour point and low smoke point
B. Low viscosity index
C. High self-ignition temperature
D. All A., B. and C.