Petroleum Refinery Engineering Which of the following is an additive used for improving the cetane number of diesel? None of these Ethyl nitrate or acetone Tetraethyl lead Tetramethyllead None of these Ethyl nitrate or acetone Tetraethyl lead Tetramethyllead ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Diesel index.(an alternative index for expressing the quality of diesel) is Determined by using a test engine Not related to aniline point Equal to cetane number plus 3 All of these Determined by using a test engine Not related to aniline point Equal to cetane number plus 3 All of these ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Molecular weight of crude oil is in the range of 100-120 600-850 450-550 230-250 100-120 600-850 450-550 230-250 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Solvent used in the Udex (glycol) extraction process for removal of light aromatics from cracked naphtha is Propane Methyl ethyl ketone (MEK) Diethylene glycol Aqueous solution (10% water) of diethylene glycol Propane Methyl ethyl ketone (MEK) Diethylene glycol Aqueous solution (10% water) of diethylene glycol ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Crude oil is subjected to vacuum distillation in the last stage, because Lighter/low boiling products are prone to thermal decomposition None of these High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose High purity products can be obtained thereby Lighter/low boiling products are prone to thermal decomposition None of these High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose High purity products can be obtained thereby ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Choose the correct statement regarding thermal cracking. Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more Increased residence time results in the decreased severity of cracking Greater depth of cracking gives lower octane number gasoline Moderate changes in operating temperature does not change the depth of cracking At low pressure, the yield of lighter hydrocarbons are more ANSWER DOWNLOAD EXAMIANS APP
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