Petroleum Refinery Engineering

11. 95% (by volume) of LPG at 760 mm Hg pressure will evaporate at _________ °C.

1. 2
2. -40
3. 30
4. 55

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12. A good lubricant should have high

1. Viscosity index
2. Volatility
3. Pour point
4. None of these

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13. A multigrade lubricating oil means an oil having high

1. Viscosity index
2. Viscosity
3. Aniline point
4. Flash point

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14. A petroleum well is called 'dry', if it contains

1. Very little oil
2. No natural gas
3. Only natural gas
4. All (A), (B) and (C)

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15. A typical yield of diesel in straight run distillation of crude oil may be about _________ percent.

1. 8
2. 18
3. 28
4. 35

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16. A typical yield of kerosene in straight run distillation of crude oil may be about _________ percent.

1. 4
2. 10
3. 18
4. 26

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17. Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is

1. 4
2. 3
3. 2
4. 1

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18. Alkylation

1. Causes olefins to combine with each other
2. Causes olefins to combine with iso-paraffins
3. Converts iso-paraffin into olefin
4. Converts olefin into paraffin

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19. An upper limit of oil content is limited to about _________ percent for achieving efficient and satisfactory level of wax sweating.

1. 5
2. 15
3. 40
4. 60

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20. Aniline point is a property of the

1. Diesel
2. LPG
3. Naphtha
4. Gasoline

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