Category: Petroleum Refinery Engineering

A. Increase its smoke point
B. Reduce gum formation
C. Reduce the pour point
D. Increase its octane number

A. 5
B. 15
C. 40
D. 60

A. Amyl nitrate
B. Alcohols
C. Mercaptans
D. Pyridine

A. Polymer
B. Unleaded
C. Casing head
D. Straight run

A. Stiffness
B. Lubricating properties (e.g. oilness)
C. Service temperature
D. Variation in viscosity with temperature

A. Naphtha or straight run gasoline
B. Reduced crude
C. Vacuum gas oil
D. Atmospheric gas oil

A. Oleophilic
B. Oleophobic
C. Both A. and B.
D. Neither A. nor B.

A. 5
B. 15
C. 25
D. 35

A. Is the measure of its flash point
B. Is the measure of variation of viscosity with temperature
C. Should be low
D. None of these

A. 2
B. 5
C. 10
D. 25