⟩ Cetane number of high speed diesel must be ≥ A. 30 B. 45 C. 75 D. 95
Option B
Option B
"Breathing loss" on storage of gasoline occurs due to the A. presence of unsaturated air. B. fluctuation of ambient temperature during day and night. C. both (a) and (b). D. neither (a) nor (b).
Which is an anticing compound? A. Amyl nitrate B. Alcohals C. Mercaptans D. Pyridine
The terminology used for the bottom most product from the vacuum crude distillation unit is A. residual crude B. residuum C. reduced crude D. petrolatum
Which of the following is the easiest to crack? A. Paraffins B. Olefins C. Naphthenes D. Aromatics
Flash point of a liquid petroleum fuel gives an idea about its A. volatility. B. explosion hazards characteristics. C. nature of boiling point diagram. D. all (a), (b) and (c)
Clay treatment of petroleum products A. decolorises & stabilises cracked gasoline. B. desulphurise straight run gasoline & kerosene. C. adsorb arsenic from feedstock to catalytic reforming. D. all (a), (b) & (c).
Waxy crudes are treated with chemical additives mainly to A. depress its pour point B. dissolve wax C. precipitate wax D. remove wax
Water content in the crude oil as it comes out of oil well may be upto __________ percent. A. 2 B. 5 C. 10 D. 25
Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has A. high pour point and low smoke point. B. low viscosity index. C. high self-ingnition temperature. D. all (a), (b) and.(c).
__________ treatment is done for appreciable improvement in viscosity index of lubricating oil. A. Acid B. Solvent extraction C. Alkali D. Clay