A. Deoiling
B. Solvent refining
C. Clay treatment
D. Hydro-treatment
Related Mcqs:
- A multigrade lubricating oil means an oil having high __________________?
A. Viscosity index
B. Viscosity
C. Aniline point
D. Flash point - ________________ treatment is done for appreciable improvement in viscosity index of lubricating oil?
A. Acid
B. Solvent extraction
C. Alkali
D. Clay - Paraffins are desirable in lubricating oil, as it has got high_____________________?
A. Viscosity
B. Viscosity index
C. Smoke point
D. Pour point - Higher viscosity of lubricating oil usually signifies_______________________?
A. Lower Reid vapour pressure
B. Higher acid number
C. Higher flash point and fire point
D. Lower flash point and fire point - Furfural solvent extraction is used for upgrading (by dissolving aromatics) ?
A. Naphtha
B. Lubricating oils
C. Wax
D. Cracking feedstock - Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about ________________ mm Hg absolute?
A. 1 to 5
B. 30 to 80
C. 250 to 350
D. 450 to 500 - Which of the following processes in oil refinery does not employ „cracking‟?
A. Coking
B. Visbreaking
C. Pyrolysis
D. None of these - Which of the following is not an important property of fuel oil/furnace oil ?
A. Sulphur content
B. Viscosity
C. Aniline point
D. Flash point - Viscosity index of a lubricating oil_________________?
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 - Highest quality bitumen is produced from the __________________ crude oil?
A. Paraffinic
B. Naphthenic
C. Intermediate
D. Mixed
