23051. 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
23052. Catalyst used in catalytic polymerisation which produces polymer gasoline is
23053. Butadiene is a/an
23054. Antioxidants are added in petrol to
23055. Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.
23056. Which of the following categories of gasoline has the highest lead susceptibility ?
23057. Gum formation in stored gasoline is mainly due to the
23058. Flash point of an oil is determined by the
23059. Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic
23060. During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water.
23061. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to
23062. Which of the following has the highest gum forming tendency in gosoline ?
23063. Higher viscosity of lubricating oil usually signifies
23064. Aniline point test of an oil qualitatively indicates the __________ content of an oil.
23065. Which of the following processes in oil refinery does not employ 'cracking' ?
23066. Bottom product of atmospheric pressure crude oil distillation column is termed as
23067. Which of the following is used as a solvent in deasphalting of petroleum products ?
23068. Penetration test determines the __________ of the grease.
23069. The reservoir rock containing petroleum has
23070. Fuel oil is subjected to visbreaking to reduce its
23071. Which is the most desirable component of a good quality kerosene ?
23072. In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen
23073. The yield of straight run LPG from crude oil is about __________ weight percent.
23074. Deoiling is the process of removal of oil from wax. It is done by the __________ process.
23075. Smoke volatility index is equal to smoke point plus
23076. Mercaptans are added to liquefied petroleum gas (LPG) to
23077. 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
23078. Doctor's solution used for sweetening of petroleum products is
23079. Smoke point of kerosene expresses its
23080. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is
23081. Which of the following has the highest octane number ?
23082. Choose the correct statement.
23083. Which is the most effective catalyst used in catalytic cracking of petroleum products ?
23084. Maximum use of petroleum coke is in
23085. Carbon/hydrogen ratio (by weight) is maximum (out of following) for
23086. The catalytic cracking of heavier petroleum fraction is done to produce mainly
23087. Catalyst used in the catalytic cracking is
23088. Specific gravity of a petroleum product gives an indication of its
23089. The bending angle of the hard drawn bare copper conductor for Britannia joint should be
23090. The doctor's solution comprises of sodium plumbite in
23091. Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of
23092. The most commonly used feed stock for the reforming reactor is
23093. Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?
23094. Petroleum is believed to have originated from __________ sources.
23095. Which of the following has the lowest flash point of all?
23096. Cetane number of high speed diesel must be ≥
23097. LSHS is a type of furnace oil, which
23098. Hydrofining is the most recent and effective method for the
23099. Isomerisation converts the __________ tot-paraffins.
23100. Straight run petrol as compared to methyl/ethyl alcohol has