Petroleum Refinery Engineering

191. Reforming converts

1. Olefins into paraffins
2. Naphthenes into aromatics
3. Naphthenes into olefins
4. Naphthenes into paraffin

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192. Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its

1. Molecular weight
2. Aromatics content
3. Both ‘a’ & ‘b’
4. Neither ‘a’ nor ‘b’

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193. Reid vapour pressure of gasoline is the measure of its

1. Pour point
2. Cloud point
3. Vapour locking tendency
4. Carbon residue

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194. Removal of light fractions from crude oil is called its

1. Sweetening
2. Dehydration
3. Stabilisation
4. Visbreaking

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195. Research octane number refers to the

1. Low octane number motor fuels
2. High octane number motor fuels
3. High octane number aviation fuels
4. Unleaded motor fuels

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196. Road grade bitumen is produced from vacuum residue by its

1. Aeration
2. Pyrolysis
3. Hydrogenation
4. Steam reforming

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197. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about _________ ptb (pounds per thousand barrel).

1. 0.03
2. 3
3. 35
4. 70

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198. Smoke point of a good burning kerosene may be around _________ mm.

1. 0-5
2. 20-25
3. 60-75
4. 100-120

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199. Smoke point of a test sample of kerosene is found to be 15 mm. On removal of _________ from it, the smoke point rises to 25 mm.

1. n-paraffins
2. Olefins
3. Aromatics
4. None of these

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200. Smoke point of kerosene expresses its

1. Burning characteristics
2. Luminosity characteristics
3. Aromatic content directly
4. Lamp wick wetting characteristics

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