Category: Petroleum Refinery Engineering

A. Smoke point
B. Paraffins
C. Aromatics
D. Naphthenes

A. Gives higher yield of petrol
B. Lower octane number of petrol
C. Higher sulphur content in the product
D. Higher gum forming material in petrol

A. 60
B. 70
C. 80
D. 90

A. Heating
B. Cooling
C. Solvent extraction
D. Both B. & C.

A. Diesel increases its cetane number
B. Kerosene increases its smoke point
C. Petrol increases its octane number
D. All A., B. and C.

A. Olefins
B. Mercaptans
C. Naphthenes
D. Cycloparaffins

A. Aeration
B. Pyrolysis
C. Hydrogenation
D. Steam reforming

A. Leads to corrosion
B. Increases lead susceptibility
C. Decreases gum formation
D. Helps during stabilisation

A. Dehydrogenation of naphthenes
B. Hydrogenation of naphthenes
C. Hydrocracking of paraffins
D. Saturation of olefins

A. Paraffins have higher octane number than corresponding iso-paraffin
B. Paraffins have lower smoke point than aromatics
C. Suitability of kerosene as a fuel & as an illuminant may be determined by char value test
D. Aviation fuel should have very high cloud point