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 Suppress coke formation Reduce gum content in gasoline Enhance the octane number of gasoline Increase the yield of light distillates Suppress coke formation Reduce gum content in gasoline Enhance the octane number of gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Aniline point is the Both A & B Measure of aromatic content of oil Characteristic property of diesel & lubricating oils Neither A nor B Both A & B Measure of aromatic content of oil Characteristic property of diesel & lubricating oils Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent. 10 18 26 4 10 18 26 4 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil Gives higher yield of petrol Lower octane number of petrol Higher gum forming material in petrol Higher sulphur content in the product Gives higher yield of petrol Lower octane number of petrol Higher gum forming material in petrol Higher sulphur content in the product ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Pyrolysis of kerosene or natural gasoline is done to produce mainly the Olefins and aromatics Lighter paraffins Stabilised gasoline Diesel Olefins and aromatics Lighter paraffins Stabilised gasoline Diesel ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Visbreaking Uses natural gas as feed Produces gasoline only Is carried out at atmospheric pressure Produces fuel oil of lower viscosity Uses natural gas as feed Produces gasoline only Is carried out at atmospheric pressure Produces fuel oil of lower viscosity ANSWER DOWNLOAD EXAMIANS APP
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