Petroleum Refinery Engineering Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm² is maintained during cracking mainly to Increase the yield of light distillates Reduce gum content in gasoline Suppress coke formation Enhance the octane number of gasoline Increase the yield of light distillates Reduce gum content in gasoline Suppress coke formation Enhance the octane number of gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil Higher sulphur content in the product Gives higher yield of petrol Higher gum forming material in petrol Lower octane number of petrol Higher sulphur content in the product Gives higher yield of petrol Higher gum forming material in petrol Lower octane number of petrol ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering 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 Molecular weight Both A & B Aromatics content Neither A nor B Molecular weight Both A & B Aromatics content Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Petroleum coke is used mainly in the Blast furnace for reduction of iron ore Discoloration of yellow glycerine Manufacture of carbon electrode Sugar refining Blast furnace for reduction of iron ore Discoloration of yellow glycerine Manufacture of carbon electrode Sugar refining ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following processes consumes hydrogen? Fluid catalytic cracking Visbreaking Propane deasphalting None of these Fluid catalytic cracking Visbreaking Propane deasphalting None of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Electrical desalting of crude oil removes the __________ impurities. Both A & B Oleophobic Neither A nor B Oleophilic Both A & B Oleophobic Neither A nor B Oleophilic ANSWER DOWNLOAD EXAMIANS APP
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