Petroleum Refinery Engineering MCQ Questions & Answers

Petroleum Refinery Engineering MCQ Questions & Answers | Chemical Engineering

Learn Petroleum Refinery Engineering MCQ questions & answers are available for a Chemical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Petroleum Refinery Engineering MCQ question is the important chapter for a Chemical Engineering and GATE students. Page-3 section-4

Visbreaking

A) Uses natural gas as feed B) Is carried out at atmospheric pressure C) Produces fuel oil of lower viscosity D) Produces gasoline only

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Answer & Solution

Answer: Option C

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Smoke volatility index is equal to smoke point plus

A) 0.42 × (% distilled at 204°C) B) 5 mm C) 0.84 × (% distilled at 204°C) D) 10 mm approximately

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Answer: Option A

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Antioxidants are added in petrol to

A) Impart colour to it, for easy identification B) Minimise the gum formation C) Prevent icing of the carburettor D) Prevent the lead build up in engines

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Answer: Option B

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Solvent used for dewaxing of petroleum products are

A) Furfural B) Methyl ethyl ketone (MEK) C) Propane D) Both B & C

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Answer: Option C

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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.

A) 1 B) 50 C) 5000 D) 10000

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Answer: Option B

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

A) 8 B) 18 C) 28 D) 35

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Answer: Option A

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

A) 4 B) 10 C) 18 D) 26

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Answer: Option B

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

A) 2 B) 6 C) 12 D) 18

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Answer & Solution

Answer: Option D

Solution:

Naphtha is a major light fraction obtained from straight run (atmospheric) distillation of crude oil.

The yield of naphtha depends on crude oil type, but for an average crude, it typically lies in the range of 15% to 20%.

Thus, 18% is the most appropriate and representative value among the given options.

Lower values such as 2% and 6% are too small and correspond more to lighter gases, while 12% may occur for heavier crudes but is below the common average.

Therefore, the correct answer is 18%.

Which of the following processes in oil refinery does not employ 'cracking'?

A) Coking B) Visbreaking C) Pyrolysis D) None of these

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Answer: Option D

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Most widely used solvent for dewaxing is

A) Methyl-ethyl-ketone (MEK) B) Naphtha C) Petroleum ether D) Sodium plumbite

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Answer: Option A

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