A. Sulphur increases
B. Sulphur decreases
C. Nitrogen decreases
D. None of these
Related Mcqs:
- Sulphur content in lighter and heavier petroleum products is generally determined respectively by _______________?
A. Lamp method and bomb method
B. Bomb method and lamp method
C. Bomb method and quartz tube method
D. Quartz tube method and lamp method - Bottom product of atmospheric pressure crude oil distillation column is termed as________________?
A. Reduced crude
B. Heavy ends
C. Asphalt
D. Residuum - The catalytic cracking of heavier petroleum fraction is done to produce mainly____________________?
A. Gasoline
B. Asphalt
C. Diesel oil
D. Tar - Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about ______________ kg/cm2?
A. 1.5
B. 3
C. 6
D. 12 - 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 - _____________ base crude oil is also called asphaltic crude?
A. Paraffinic
B. Naphthenic
C. Mixed
D. Aromatic - _____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?
A. Magnesium
B. Potassium
C. Calcium
D. Sodium - 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 - Sour crude means the ________________ bearing crude?
A. Asphalt
B. Sulphur compounds
C. Wax
D. Nitrogen compounds - Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’ ?
A. 1
B. 5
C. 15
D. 25
