Petroleum Refinery Engineering Antioxidants are added in petrol to Prevent icing of the carburettor Impart colour to it, for easy identification Prevent the lead build up in engines Minimise the gum formation Prevent icing of the carburettor Impart colour to it, for easy identification Prevent the lead build up in engines Minimise the gum formation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering In catalytic cracking, the Gasoline obtained has very high aromatic content Gasoline obtained has a very low octane number Pressure & temperature is very high Gasoline obtained has very high amount of gum forming compounds Gasoline obtained has very high aromatic content Gasoline obtained has a very low octane number Pressure & temperature is very high Gasoline obtained has very high amount of gum forming compounds 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 Reduce gum content in gasoline Suppress coke formation Increase the yield of light distillates Enhance the octane number of gasoline Reduce gum content in gasoline Suppress coke formation Increase the yield of light distillates ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Crude oil is subjected to vacuum distillation in the last stage, because High purity products can be obtained thereby None of these High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose Lighter/low boiling products are prone to thermal decomposition High purity products can be obtained thereby None of these High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose Lighter/low boiling products are prone to thermal decomposition ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following categories of gasoline has the highest lead susceptibility? Polymer gasoline Catalytical cracked gasoline Straight run gasoline Platinum reformed gasoline Polymer gasoline Catalytical cracked gasoline Straight run gasoline Platinum reformed gasoline ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering True vapour pressure of a petroleum fraction __________ Reid vapour pressure. Is less than Is more than May be either more or less than Is same as Is less than Is more than May be either more or less than Is same as ANSWER DOWNLOAD EXAMIANS APP
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