A. Increase the yield of light distillates
B. Suppress coke formation
C. Enhance the octane number of gasoline
D. Reduce gum content in gasoline
Related Mcqs:
- In catalytic cracking process, olefins crack ______________ times faster than in thermal cracking process?
A. 100
B. 200-300
C. 1000-10000
D. 10 - 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 - Pressure & temperature maintained in catalytic cracking is about__________________?
A. 2 atm & 500°C
B. 10 atm & 500°C
C. 30 atm & 200°C
D. 50 atm & 750°C - 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 - The pressure (kg/cm2) and temperature (°C) maintained in electrical desalters for crude oil are respectively__________________?
A. 10 and 120
B. 1 and 200
C. 50 and 250
D. 10 and 300 - Thermofor catalytic cracking process is a ______________ process?
A. Fixed bed
B. Moving bed
C. Fluidised bed
D. Non-catalytic - Which of the following is the most widely used cracking process in oil refineries ?
A. Dubbs process
B. T.C.C. moving bed process
C. Fluidised bed catalytic cracking process
D. Houdry’s fixed bed process - Octane number of gasoline produced by two stage fluidised catalytic cracking process is___________________?
A. 80
B. 87
C. 92
D. 97 - Extractor temperature is maintained at -20°C in Edeleanu process to reduce the _________________ of kerosene?
A. Smoke point
B. Paraffins
C. Aromatics
D. Naphthenes - Extractor temperature is maintained at -20°C in Edeleanu process to reduce the ______________ of kerosene?
A. Smoke point
B. Paraffins
C. Aromatics
D. Naphthenes
