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“Petroleum Engineering frequently Asked Questions by expert members with experience in Petroleum Engineering. These questions and answers will help you strengthen your technical skills, prepare for the new job test and quickly revise the concepts”

340 Petroleum Engineering Questions And Answers

161⟩ Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene. A. 1 B. 20 C. 100 D. 500

Option B

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162⟩ Ethyl mercaptan is a/an __________ compound. A. sulphur B. nitrogen C. oxygen D. none of these

Option A

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163⟩ Which of the following has the lowest cetane number? A. Aromatics B. i-paraffins C. Naphthene D. Olefins E. n-paraffins

Option A

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164⟩ A typical yield of kerosene in straight run distillation of crude oil may be about __________ percent. A. 4 B. 10 C. 18 D. 26

Option B

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165⟩ Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners? A. PCM B. Tar C. Light diesel oil D. Low viscosity furnace oil

Option C

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166⟩ Which of the following is a non-regenerative fixed bed catalytic reforming process? A. Hydroforming B. Thermofer catalytic reforming C. Platforming D. Hyperforming

Option C

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167⟩ Aniline point of high speed diesel may be about __________ °C. A. 35 B. 70 C. 105 D. 150

Option B

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168⟩ The vacuum maintained in vacuum distillation unit for reduced crude is about __________ mmHg. A. 1.2 B. 12 C. 120 D. 700

Option C

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169⟩ Aniline point is a property of the A. diesel B. LPG C. naphtha D. gasoline

Option C

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170⟩ Octane number (unleaded) of reformed gasoline may be upto A. 60 B. 70 C. 80 D. 90

Option D

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171⟩ Which of the following is not a sulphur compound present in petroleum? A. Thiophenes B. Mercaptans C. Sulphones D. Pyroles

Option C

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172⟩ Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene? A. Paraffins B. Aromatics C. Mercaptans D. Naphthenic acid

Option C

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173⟩ The conductivity of crude oil-water mixture depends on the A. pH value B. water percentage C. temperature D. all (a), (b) and (c)

Option D

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174⟩ Cracking is A. an exothermic reaction. B. an endothermic reaction. C. favoured at very low temperature. D. none of these.

Option B

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175⟩ Which of the following is not an important property of fuel oil/furnace oil? A. Sulphur content B. Viscosity C. Aniline point D. Flash point

Option C

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176⟩ Smoke point of kerosene is the A. time after which smoking starts on burning. B. temperature at which smoking starts. C. maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp. D. none of these.

Option B

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177⟩ Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene. A. smoke point B. paraffins C. aromatics D. naphthenes

Option B

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178⟩ Asphalts are A. low molecular weight & low boiling point compounds present in petroleum. B. desirable in catalytic cracking feedstock, because they produce coke. C. readily oxidisable and form carbonaceous sludge. D. all (a), (b) & (c).

Option C

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179⟩ Products drawn from the top to bottom of the crude oil distillation column has progressively increasing A. boiling points B. molecular weight C. C/H ratio D. all (a), (b) and (c)

Option D

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180⟩ Which of the following is used as a solvent in deasphalting of petroleum products? A. Furfural B. Propane C. Methyl ethyl ketone D. Liquid sulphur dioxide

Option B

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