A. Multiple of 3°F
B. Multiple of 5°F
C. 5°C below the temperature at which oil ceases to flow
D. None of these
Related Mcqs:
- Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its_________________?
A. Molecular weight
B. Aromatics content
C. Both A. & B.
D. Neither ‘a’ nor ‘b’ - High aniline point of a petrofuel (say diesel) indicates that ________________?
A. It is highly aromatic in nature
B. It is highly paraffinic in nature
C. It has a very low diesel index
D. Its ignition quality is very poor - Water separometer index (modified) (WSIM) of a petrofuel is the measure of its____________________?
A. Emulsification tendency
B. Water separation characteristics
C. Water content
D. Water absorbing capacity from atmosphere - Pour point and freezing point is equal for__________________?
A. Petrol
B. Diesel
C. Water
D. Crude petroleum - Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is________________?
A. 4
B. 3
C. 2
D. 1 - In petroleum refining, the process used for conversion of hydrocarbons to aromatics is________________?
A. Catalytic cracking
B. Catalytic reforming
C. Hydrotreating
D. Alkylation - The characterisation factor of a crude oil is calculated as 12.5. It means that; it is________________?
A. Paraffinic
B. Naphthenic
C. Intermediate
D. None of these - The vacuum maintained in vacuum distillation unit for reduced crude is about _______________ mm Hg?
A. 1.2
B. 12
C. 120
D. 700 - Crude topping column operates at ________________ pressure?
A. Atmospheric
B. 10 atm
C. Vacuum
D. 3 atm - Butadiene is a/an_________________?
A. Di-olefin
B. Naphthene
C. Aromatic
D. Olefin
