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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Smoke volatility index is equal to smoke point plus

10 mm. approximately
0.42 x(% distilled at 204°C)
5 mm
0.84 x (% distilled at 204°C)

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Petroleum Refinery Engineering
Naphtha yield in straight run distillation of crude oil may be about __________ percent.

2
12
18
6

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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.

1
50
10000
5000

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Petroleum Refinery Engineering
The yield of straight run LPG from crude oil is about __________ weight percent.

0.1-0.2
20-25
44119
1-1.5

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Petroleum Refinery Engineering
Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to

None of these
Decrease the breathing loss
Improve its oxidation stability
Increase its smoke point

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Petroleum Refinery Engineering
Crude oils containing more than __________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a 'salty crude'.

25
1
15
5

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