Petroleum Refinery Engineering Mercaptans are All of these Low boiling sulphur compounds Undesirable in petrol, as they reduce its octane number Added in LPG cylinders to detect gas leakage by its smell All of these Low boiling sulphur compounds Undesirable in petrol, as they reduce its octane number Added in LPG cylinders to detect gas leakage by its smell ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Water separometer index (modified) (WSIM) of a petrofuel is the measure of its Water separation characteristics Water content Emulsification tendency Water absorbing capacity from atmosphere Water separation characteristics Water content Emulsification tendency Water absorbing capacity from atmosphere ANSWER DOWNLOAD EXAMIANS APP
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 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 Increase the yield of light distillates Reduce gum content in gasoline Suppress coke formation 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 Higher gum forming material in petrol Higher sulphur content in the product Lower octane number of petrol Gives higher yield of petrol Higher gum forming material in petrol Higher sulphur content in the product Lower octane number of petrol ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Presence of aromatics in Diesel increases its cetane number All of these Petrol increases its octane number Kerosene increases its smoke point Diesel increases its cetane number All of these Petrol increases its octane number Kerosene increases its smoke point ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Asphalts are Desirable in catalytic cracking feedstock, because they produce coke All of these Readily oxidisable and form carbonaceous sludge . Low molecular weight & low boiling point compounds present in petroleum Desirable in catalytic cracking feedstock, because they produce coke All of these Readily oxidisable and form carbonaceous sludge . Low molecular weight & low boiling point compounds present in petroleum ANSWER DOWNLOAD EXAMIANS APP
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