Category: Petroleum Refinery Engineering

A. Higher specific gravity of petroleum products means higher C/H ratio
B. Aromatics have lower specific gravity than corresponding paraffins
C. Hydrocarbons of low specific gravity (e.g., paraffins) possess the maximum thermal energy per unit volume
D. Hydrocarbons of high specific gravity (e.g., aromatics) possess the maximum thermal energy per unit weight

A. Low flash point
B. High breathing loss
C. Both A. and B.
D. Neither A. nor B.

A. Fluid catalytic cracking
B. Visbreaking
C. Propane deasphalting
D. None of these

A. 45
B. 55
C. 70
D. 90

A. Tetraethyl lead
B. Tetramethyllead
C. Ethyl nitrate or acetone
D. None of these

A. Thermal cracking
B. Gum formation
C. Coking
D. Discoloration

A. Methyl alcohol
B. Ethyl alcohol
C. Methane
D. Ethane

A. Diesel
B. LPG
C. Naphtha
D. Gasoline

A. 1.5
B. 3
C. 6
D. 12

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.