Petroleum Refinery Engineering Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm. 50 1 10000 5000 50 1 10000 5000 ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Detergent is added as an additive in engine lubricating oil to Increase oxidation stability Prevent rusting Reduce deposit formation Keep contaminants in suspension Increase oxidation stability Prevent rusting Reduce deposit formation Keep contaminants in suspension ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Removal of light fractions from crude oil is called its Stabilisation Dehydration Sweetening Visbreaking Stabilisation Dehydration Sweetening Visbreaking ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering True boiling point apparatus is used for the Determination of true vapour pressure Determination of characterisation factor None of these Evaluation of oil stocks Determination of true vapour pressure Determination of characterisation factor None of these Evaluation of oil stocks ANSWER DOWNLOAD EXAMIANS APP
Petroleum Refinery Engineering Naphtha yield in straight run distillation of crude oil may be about __________ percent. 6 12 2 18 6 12 2 18 ANSWER DOWNLOAD EXAMIANS APP
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 Gum formation Thermal cracking Coking Discoloration Gum formation Thermal cracking Coking Discoloration ANSWER DOWNLOAD EXAMIANS APP
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