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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Octane number of gasoline is a measure of its

Ignition temperature
Ignition delay
Smoke point
Resistance to knock

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Petroleum Refinery Engineering
Flash point of atmospheric distillation residue is determined by __________ apparates.

Pensky-Martens (closed cup type)
None of these
Abel
Cleveland (open cup type)

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Petroleum Refinery Engineering
Petroleum liquid fuels having flash point greater than 66°C is considered as safe during storage and handling. Which of the following has flash point > 66°C ?

Naphtha
Petrol
Kerosene
Heavy fuel oil

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Petroleum Refinery Engineering
Gum formation in stored gasoline is mainly due to the

Higher aromatic content
Presence of sulphur
Alkylation of unsaturates
Oxidation & polymerisation of unsaturates

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Petroleum Refinery Engineering
Mercaptans are added to liquefied petroleum gas (LPG) to

Assist in checking its leakage from cylinder
Increase its calorific value
Narrow down its explosion limit
Reduce its cost

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Petroleum Refinery Engineering
Presence of sulphur in gasoline

Decreases gum formation
Increases lead susceptibility
Leads to corrosion
Helps during stabilisation

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