A. Boiling points
B. Molecular weight
C. C/H ratio
D. All A., B. and C.
Related Mcqs:
- Bottom product of atmospheric pressure crude oil distillation column is termed as________________?
A. Reduced crude
B. Heavy ends
C. Asphalt
D. Residuum - During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) ________________ with increase in the amount of water?
A. Decreases
B. Increases
C. Remains unchanged
D. Decreases linearly - The terminology used for the bottom most product from the vacuum crude distillation unit is______________?
A. Residual crude
B. Residuum
C. Reduced crude
D. Petrolatum - Paraffin base crude oil as compared to asphalt base crude gives___________________?
A. Higher yield of straight run gasoline
B. Higher octane number gasoline
C. Lower viscosity index lube oil
D. Poorer yield of lube oil - _____________ base crude oil is also called asphaltic crude?
A. Paraffinic
B. Naphthenic
C. Mixed
D. Aromatic - Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about _______________ mm Hg (absolute)?
A. 5-10
B. 30-80
C. 150-250
D. 350-400 - The most widely used crude topping column in refineries is the ______________ column?
A. Bubble-cap
B. Packed bed
C. Fluidised bed
D. Perforated plate - A typical yield of diesel in straight run distillation of crude oil may be about ________________ percent?
A. 8
B. 18
C. 28
D. 35 - Naphtha yield in straight run distillation of crude oil may be about _______________ percent?
A. 2
B. 6
C. 12
D. 18 - Crude oil is subjected to vacuum distillation in the last stage, because_________________?
A. High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may
decompose
B. Lighter/low boiling products are prone to thermal decomposition
C. High purity products can be obtained thereby
D. None of these
