Petroleum Refinery Engineering Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is Between 50 and 100 More than 100 Less than 25 Round about 100 Between 50 and 100 More than 100 Less than 25 Round about 100 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Waxes present in petroleum products Decrease their viscosity Can be separated out by distillation Crystallise out at low temperature Are not soluble in them Decrease their viscosity Can be separated out by distillation Crystallise out at low temperature Are not soluble in them ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering CnH2n is the general formula for Both A & B Olefins Naphthenes Neither A nor B Both A & B Olefins Naphthenes Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering The reservoir rock containing petroleum has Both B and C High permeability High porosity Low porosity Both B and C High permeability High porosity Low porosity ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Hydrogen percentage (by weight) in crude petroleum may be about 5 15 25 35 5 15 25 35 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 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
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