Aromatics are desired constituents of____________________?
Aromatics are desired constituents of____________________?
A. Lubricating oil
B. Diesel
C. Kerosene
D. Petrol
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Cetane number of high speed diesel must be ≥_________________?
Cetane number of high speed diesel must be ≥_________________?A. 30
B. 45
C. 75
D. 95Asphalts are _________________?
Asphalts are _________________?A. Low molecular weight & low boiling point compounds present in petroleum
B. Desirable in catalytic cracking feedstock, because they produce coke
C. Readily oxidisable and form carbonaceous sludge
D. All A., B. & C.Which of the following processes in oil refinery does not employ „cracking‟?
Which of the following processes in oil refinery does not employ „cracking‟?A. Coking
B. Visbreaking
C. Pyrolysis
D. None of theseThe most widely used crude topping column in refineries is the ______________ column?
The most widely used crude topg column in refineries is the ______________ column?A. Bubble-cap
B. Packed bed
C. Fluidised bed
D. Perforated plateGum formation in stored gasoline is mainly due to the ____________________?
Gum formation in stored gasoline is mainly due to the ____________________?A. Alkylation of unsaturated
B. Presence of sulphur
C. Oxidation & polymerisation of unsaturated
D. Higher aromatic contentDiesel index (an alternative index for expressing the quality of diesel) is_______________?
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 A., B. & C.