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 Reduce gum content in gasoline Increase the yield of light distillates Suppress coke formation Enhance the octane number of gasoline Reduce gum content in gasoline Increase the yield of light distillates Suppress coke formation Enhance the octane number of gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Viscosity index of a lubricating oil Should be low Is the measure of its flash point Is the measure of variation of viscosity with temperature None of these Should be low Is the measure of its flash point Is the measure of variation of viscosity with temperature None of these 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 Lower octane number of petrol Higher gum forming material in petrol Gives higher yield of petrol Higher sulphur content in the product Lower octane number of petrol Higher gum forming material in petrol Gives higher yield of petrol ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering High aniline point of diesel indicates that, it Has a low diesel index Has a large ignition delay Is highly aromatic Is highly paraffinic Has a low diesel index Has a large ignition delay Is highly aromatic Is highly paraffinic ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Cracking is Favoured at very low temperature None of these An endothermic reaction An exothermic reaction Favoured at very low temperature None of these An endothermic reaction An exothermic reaction ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Isomerisation converts the __________ tot-paraffins. Naphthenes Olefins None of these Paraffins Naphthenes Olefins None of these Paraffins ANSWER DOWNLOAD EXAMIANS APP
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