Deoiling of wax is done by its
Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
The pressure (kg/cm2 ) and temperature (°C) maintained in electrical desalters for crude oil are respectively
The average boiling point of aviation turbine fuel is closest to that of
Gum formation in stored gasoline is mainly due to the
Which one is used to determine the colour of petroleum products ?
Presence of aromatics in
Pick out the wrong statement.
Operating temperature and pressure in catalytic reforming is about
Catalyst used in the catalytic cracking is
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
Choose the correct statement.
During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 towater) __________ with increase in the amount of water.
Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to
Electrical desalting of crude oil removes the __________ impurities.
Molecular weight of crude petroleum may be around
Mercaptans is represented as (where R and R' are alkyl groups)
Crude oil is transported inland from oil field to refineries, mainly by the
Solvent used for dewaxing of petroleum products are
The most commonly used feed stock for the reforming reactor is
Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is
Flash point of an oil is determined by the
In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen
LSHS is a type of furnace oil, which
Pick out the wrong statement.
Choose the correct statement regarding thermal cracking.
Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-kgf/cm2 is maintained during cracking mainly to
With increase in density, the viscosity of petroleum products
Specific gravity of a petroleum product gives an indication of its
Catalyst used in catalytic polymerisation which produces polymer gasoline is
Which is the most effective catalyst used in catalytic cracking of petroleum products ?
An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?
Doctor's solution used for sweetening of petroleum products is
The yield of straight run LPG from crude oil is about __________ weight percent.
Hydrofining is the most recent and effective method for the
(by volume) of LPG atmm Hg pressure will evaporate at __________ °C.
Which of the following is used as a solvent in deasphalting of petroleum products ?
Feedstock for the production of biodiesel is
Which of the following has the highest gum forming tendency in gosoline ?
Aniline point is the temperature at which
A typical yield of diesel in straight run distillation of crude oil may be about __________ percent.
Pick out the wrong statement.
Detergent is added as an additive in engine lubricating oil to
Pick out the wrong statement.
Butadiene is a/an
Maximum use of petroleum coke is in
Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the
Petroleum is believed to have originated from __________ sources.
Smoke point of kerosene expresses its