Waxy crudes are treated with chemical additives mainly to__________?
Maximum use of petroleum coke is in__________?
Crude oil is pumped by a __________ pump?
Catalyst used in the isomerisation is__________?
Which of the following hydrocarbons of same carbon atoms has minimum smoking tendency ?
__________ determination is not a very significant and important test for gasoline?
Natural gasoline is produced__________?
95% (by volume) of LPG at 760 mm Hg pressure will evaporate at __________ °C?
Which is the most undesirable component in kerosene ?
Aniline point of the diesel is a measure of its __________ content?
Which of the following has the highest gum forming tendency in gosoline ?
Operating condition in the electrical dehydrators for crude oil is about__________?
Which of the following has the maximum °API gravity of all ?
Deoiling is the process of removal of oil from wax. It is done by the __________ process?
In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones?
Crude petroleum oil is a __________ fuel?
Specific gravity of a petroleum product gives an indication of its __________?
Solvent used in duo-sol extraction for lube oil upgradation is a mixture of__________?
Name the endothermic reaction out of the following ?
Operating temperature and pressure in catalytic reforming is about__________?
Which of the following has the lowest viscosity (at a given temperature) of all ?
Presence of sulphur in gasoline__________?
Higher viscosity of lubricating oil usually signifies__________?
Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ?
Smoke volatility index is equal to smoke point plus__________?
Diesel index (an alternative index for expressing the quality of diesel) is__________?
Catalyst used in the catalytic cracking is__________?
For gasoline, the flash point (<50°C) is determined by the__________?
Main constituent of natural gas is__________?
Crude oil is subjected to vacuum distillation in the last stage, because__________?
Mercaptans are__________?
Aniline point test of an oil qualitatively indicates the __________ content of an oil?
Pour point and freezing point is equal for__________?
Hydrogen content in petroleum products varies from 12 to 15% (by weight). As a result the difference between gross and net heating value of petroleum fuels varies in the range of __________ kcal/kg?
The characterisation factor of a crude oil is calculated as 12.5. It means that; it is__________?
Solution used in Doctor’s treatment for the removal of mercaptans is__________?
Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is__________?
Straight run petrol as compared to methyl/ethyl alcohol has__________?
__________ test is done to find out the softening point of bitumen?
In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process?
Which of the following processes in oil refinery does not employ „cracking‟?
Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst?
Diesel index is defined as__________?
Carbon/hydrogen ratio (by weight) is maximum (out of following) for__________?
Stabilisation of gasoline (petrol) means __________?
Naphthenic acid is represented by __________?
Bottom product of atmospheric pressure crude oil distillation column is termed as__________?
Smoke point of kerosene expresses its__________?
Liquefied petroleum Gas (LPG) used for the household cooking comprises mainly of __________?
Removal of light fractions from crude oil is called its __________?
Which of the following is used as a solvent in deasphalting of petroleum products ?

Pick out the wrong statement?

A. Multigrade lubricating oils have high viscosity index
B. Paraffinic oil has very high viscosity index
C. Naphthenic oil has very low viscosity index
D. High viscosity index means a large change in viscosity with change in temperature

Correct Answer: High viscosity index means a large change in viscosity with change in temperature ✔

Last Updated: March 07, 2019