Related Questions

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 vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg.
A 1.2
B 12
C 120
D 700
Bottom product of atmospheric pressure crude oil distillation column is termed as
A Reduced crude
B Heavy ends
C Asphalt
D Residuum
Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil
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
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
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
Products drawn from the top to bottom of the crude oil distillation column has progressively increasing
A Boiling points
B Molecular weight
C C/H ratio
D All of the above
The terminology 'BTX' used in coal tar distillation industry refers to
A Benzol-toluol-xylol
B Benzol-toluene-xylene
C Benzene-toluol-xylol
D Benzene-toluene-xylene
__________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.
A Magnesium
B Potassium
C Calcium
D Sodium
The main use of heavy gas oil produced by the vacuum distillation unit is as a
A Blending component for kerosene
B Blending component for petrol
C Feedstock for fluid catalytic cracking unit
D None of these

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