Category: Petroleum Refinery Engineering

A. Coking tendency increases with increasing molecular weight
B. Coking tendency decreases with increasing molecular weight
C. Higher pressure enhances coke formation
D. Coking is an exothermic reaction

A. Decolorizes & stabilises cracked gasoline
B. Desulphurise straight run gasoline & kerosene
C. Adsorb arsenic from feedstock to catalytic reforming
D. All A., B. & C.

A. Octane number
B. Lead susceptibility
C. Gum forming tendency & thoroughness of refining
D. None of these

A. 5
B. 10
C. 25
D. 100

A. Ignition delay
B. Smoke point
C. Viscosity
D. Oxidation stability

A. Low boiling sulphur compounds
B. Added in LPG cylinders to detect gas leakage by its smell
C. Undesirable in petrol, as they reduce its octane number
D. All A., B. and C.

A. Alkylation of unsaturated
B. Presence of sulphur
C. Oxidation & polymerisation of unsaturated
D. Higher aromatic content

A. 0.03
B. 3
C. 35
D. 70

A. Sulphur increases
B. Sulphur decreases
C. Nitrogen decreases
D. None of these

A. Methanol in Unisol process
B. Naphthenic acid in Mercapsol process
C. Both A. and B.
D. Neither A. nor B.