Petroleum Refinery Engineering Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of Coking Gum formation Discoloration Thermal cracking Coking Gum formation Discoloration Thermal cracking ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering 1 centistoke is equal to __________ Redwood I seconds. 40.8 4.08 0.408 1 40.8 4.08 0.408 1 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Concentration of H₂SO₄ catalyst in alkyla-tion is kept between 90-98%, because H₂SO₄ having concentration Neither A nor B Both A & B More than 98% promotes cracking Less than 90% promotes polymerisation Neither A nor B Both A & B More than 98% promotes cracking Less than 90% promotes polymerisation ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following has the lowest cetane number? Naphthene Olefins I-paraffins Aromatics Naphthene Olefins I-paraffins Aromatics ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Presence of aromatics in Diesel increases its cetane number All of these Kerosene increases its smoke point Petrol increases its octane number Diesel increases its cetane number All of these Kerosene increases its smoke point Petrol increases its octane number ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Which of the following is the most widely used cracking process in oil refineries? Houdry's fixed bed process Dubbs process Fluidised bed catalytic cracking process T.C.C. moving bed process Houdry's fixed bed process Dubbs process Fluidised bed catalytic cracking process T.C.C. moving bed process ANSWER DOWNLOAD EXAMIANS APP
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