Petroleum Refinery Engineering

241. The octane number of aviation gasoline may be

1. 79
2. 87
3. 97
4. 100

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242. The order of preference for feedstock to a catalytic reformer is

1. Catalytic naphtha - coking naphtha - virgin naphtha
2. Coking naphtha - virgin naphtha - catalytic naphtha
3. Virgin naphtha - catalytic naphtha - coking naphtha
4. Virgin naphtha - coking naphtha - catalytic naphtha

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243. The pressure (kg/cm²) and temperature (°C) maintained in electrical desalters for crude oil are respectively

1. 10 and 120
2. 1 and 200
3. 50 and 250
4. 10 and 300

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244. The proper arrangement of the petroleum fractions in order of their boiling points is

1. Lubricating oil"diesel"petrol"LPG
2. Lubricating oil"petrol"diesel"LPG
3. Petrol"lubricating oil"diesel"LPG
4. Petrol"diesel"LPG"lubricating oil

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245. The reservoir rock containing petroleum has

1. Low porosity
2. High permeability
3. High porosity
4. Both (B) and (C)

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246. The solvent used in Barisol dewaxing process is

1. Hexane
2. Furfural
3. Benzol and ethylene dichloride
4. Methyl ethyl ketone (MEK)

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247. The terminology used for the bottom most product from the vacuum crude distillation unit is

1. Residual crude
2. Residuum
3. Reduced crude
4. Petrolatum

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248. The vacuum maintained in vacuum distillation unit for reduced crude is about _________ mm Hg.

1. 1.2
2. 12
3. 120
4. 700

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249. The yield of straight run LPG from crude oil is about _________ weight percent.

1. 20-25
2. 1-1.5
3. 42278
4. 0.1-0.2

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250. Thermofor catalytic cracking process is a _________ process.

1. Fixed bed
2. Moving bed
3. Fluidised bed
4. Non-catalytic

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