Category: Petroleum Refinery Engineering

A. Paraffinic
B. Naphthenic
C. Intermediate
D. Mixed

A. Octane number of i-octane is zero
B. Octane number of paraffins increases with increasing number of carbon atoms
C. Branched chain paraffins have higher octane number than straight chain paraffins with same number of carbon atoms
D. The aromatics have lower octane number than naphthenes with same number of carbon atoms

A. Depress its pour point
B. Dissolve wax
C. Precipitate wax
D. Remove wax

A. Naphtha
B. Lubricating oils
C. Wax
D. Cracking feedstock

A. Increases
B. Decreases
C. Remain same
D. Either A. or B.

A. Propane & butane
B. Methane & ethane
C. High boiling olefins
D. High boiling naphthenes

A. More than 100
B. Round about 100
C. Between 50 and 100
D. Less than 25

A. Decrease in paraffin content
B. Increase in thermal energy per unit weight
C. Increase in aromatic content
D. Higher H/C ratio

A. Olefins
B. Naphthenes
C. Both A. and B.
D. Neither A. nor B.

A. From oil wells
B. In oil refineries
C. By natural gas stripping
D. None of these