Diesel index.(an alternative index for expressing the quality of diesel) is
A. Determined by using a test engine
B. Not related to aniline point
C. Equal to cetane number plus 3
D. All of the above
Select an option to see the answer and solution.
__________ treatment is done for appreciable improvement in viscosity index of lubricating oil.
A. Acid
B. Solvent extraction
C. Alkali
D. Clay
Select an option to see the answer and solution.
Smoke point of kerosene is the
A. Time after which smoking starts on burning
B. Temperature at which smoking starts
C. Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp
D. None of these
Select an option to see the answer and solution.
The colour of gasoline is an indication of its
A. Octane number
B. Lead susceptibility
C. Gum forming tendency & thoroughness of refining
D. None of these
Select an option to see the answer and solution.
Boiling range of motor gasoline is an indication of the
A. Case of starting
B. Rate of acceleration
C. Vapour locking tendency
D. All of the above
Select an option to see the answer and solution.
In solutizer sweetening process, solutizer solution used is
A. Methanol in Unisol process
B. Naphthenic acid in Mercapsol process
C. Both A & B
D. Neither A nor B
Select an option to see the answer and solution.
Higher pressure in the reforming reactor
A. Increases coke formation
B. Increases the rate of reaction
C. Produces high octane number gasoline
D. None of these
Select an option to see the answer and solution.
Bottom product of atmospheric pressure crude oil distillation column is termed as
A. Reduced crude
B. Heavy ends
C. Asphalt
D. Residuum
Select an option to see the answer and solution.
For gasoline, the flash point (<50°C) is determined by the
A. Abel apparatus
B. Pensky-Marten's apparatus
C. Saybolt chromometer
D. None of these
Select an option to see the answer and solution.
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A. 5-10
B. 30-80
C. 150-250
D. 350-400
Select an option to see the answer and solution.
Which of the following has the lowest viscosity (at a given temperature) of all?
A. Naphtha
B. Kerosene
C. Diesel
D. Lube oil
Select an option to see the answer and solution.
Hydrofining is the most recent and effective method for the
A. Removal of sulphur
B. Improvement of smoke point
C. Reduction of breathing loss
D. Improvement of viscosity index
Select an option to see the answer and solution.
Which is the most desirable component of a good quality kerosene?
A. I-paraffins
B. Aromatics
C. N-paraffins
D. Naphthenes
Select an option to see the answer and solution.
High aniline point of diesel indicates that, it
A. Is highly aromatic
B. Has a large ignition delay
C. Is highly paraffinic
D. Has a low diesel index
Select an option to see the answer and solution.
Catalyst used in the isomerisation is
A. Aluminium chloride
B. Alumina
C. Nickel
D. Phosphoric acid
Select an option to see the answer and solution.
Pick out the correct statement pertaining to catalytic cracking.
A. With increase in the reactor pressure, octane number of gasoline decreases
B. With increase in the reactor temperature, gasoline yield decreases for a given conversion
C. Percentage conversion increases with increase in the catalyst to oil ratio
D. All of the above
Select an option to see the answer and solution.
Which of the following is the most important property for a jet fuel?
A. Cloud point
B. Pour point
C. Colour
D. Freezing point
Select an option to see the answer and solution.
Which of the following is the most suitable feed for platforming process (reforming)?
A. Olefinic hydrocarbon
B. Naphtha
C. Fuel oil
D. Atmospheric residue
Select an option to see the answer and solution.
Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about __________ of that of water (i.e. 1 gm/c.c).
A. One fourth
B. One third
C. Half
D. One eighth
Select an option to see the answer and solution.
The coking process normally mostly used in Indian oil refineries is the __________ coking process.
A. Delayed
B. Flexi
C. Fluid
D. Contact
Select an option to see the answer and solution.