23001. True boiling point apparatus is used for the
23002. In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones.
23003. Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.
23004. Solution used in Doctor's treatment for the removal of mercaptans is
23005. Flash point of motor gasoline may be around __________ °C.
23006. __________ converts n-paraffins to i-paraffins.
23007. The colour of gasoline is an indication of its
23008. The octane number of aviation gasoline may be
23009. Flash point of an oil gives an idea of the
23010. Furfural solvent extraction is used for upgrading (by dissolving aromatics)
23011. Illuminating characteristics of kerosene is expressed by its
23012. Which of the following constituents present in petroleum is responsible for ash formation?
23013. The coking process normally mostly used in Indian oil refineries is the __________ coking process.
23014. Presence of aromatics in
23015. Choose the correct statement regarding thermal cracking.
23016. A typical yield of diesel in straight run distillation of crude oil may be about __________ percent.
23017. Which is almost absent in crude petroleum?
23018. Naphthenic acid is a/an __________ compound.
23019. Glycol added to petrol acts as a/an __________ agent.
23020. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil
23021. Which one is used to determine the colour of petroleum products ?
23022. At the time of starting the sodium vapour lamp gives the colour of light is
23023. Feedstock for the production of biodiesel is
23024. The proper arrangement of the petroleum fractions in order of their boiling points is
23025. Octane number of gasoline produced by two stage fluidised catalytic cracking process is
23026. Centre tapping of the high voltage transformer must be earthed to
23027. Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to
23028. The possible minimum reading which can be taken by 0.25 m.m.of an outside micrometer is
23029. Testing of the knocking characteristics of petrofuels is done in a __________ engine.
23030. Name the hydrocarbon having the poorest oxidation stability.
23031. The first crude oil refinery of India is located at
23032. Olefins are
23033. Which of the following is desirable in diesel and kerosene but is undersirable in gasoline ?
23034. Phenols are added in gasoline to
23035. The pressure (kg/cm2 ) and temperature (°C) maintained in electrical desalters for crude oil are respectively
23036. The average boiling point of aviation turbine fuel is closest to that of
23037. Crude oil is transported inland from oil field to refineries, mainly by the
23038. Solvent used for dewaxing of petroleum products are
23039. The most widely used crude topping column in refineries is the __________ column.
23040. Deoiling of wax is done by its
23041. Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.
23042. Molecular weight of crude petroleum may be around
23043. Mercaptans is represented as (where R and R' are alkyl groups)
23044. Petrolatum is
23045. Electrical desalting of crude oil removes the __________ impurities.
23046. An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating.
23047. 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
23048. Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about __________ kms.
23049. Sulphur content in lighter and heavier petroleum products is generally determined respectively by
23050. Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.