Petroleum Refinery Engineering Lecture Notes Questions Answers - Set 06 - ObjectiveBooks

Petroleum Refinery Engineering Lecture Notes Questions Answers - Set 06

Practice Test: Question Set - 06

1. Which of the following is the easiest to crack?
    (A) Paraffins
    (B) Olefins
    (C) Naphthenes
    (D) Aromatics

2. Increase in the specific gravity of petroleum products indicates
    (A) Decrease in paraffin content
    (B) Increase in thermal energy per unit weight
    (C) Increase in aromatic content
    (D) Higher H/C ratio

3. Clay treatment is used to remove
    (A) Salt from the crude oil
    (B) Color & dissolved gases from cracked gasoline
    (C) Wax from lube oil
    (D) None of these

4. Electrical desalting of crude oil removes the __________ impurities.
    (A) Oleophilic
    (B) Oleophobic
    (C) Both (a) and (b)
    (D) Neither (a) nor (b)

5. __________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation.
    (A) Magnesium
    (B) Potassium
    (C) Calcium
    (D) Sodium

6. The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to
    (A) Obviate catalyst poisoning
    (B) Maintain the reaction temperature
    (C) Sustain the reactor pressure
    (D) Hydrogenate the feed stock

7. Ethyl mercaptan is a/an __________ compound.
    (A) Sulphur
    (B) Nitrogen
    (C) Oxygen
    (D) None of these

8. Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.
    (A) Polymer
    (B) Unleaded
    (C) Casing head
    (D) Straight run

9. Which of the following petroleum products contain minimum sulphur?
    (A) Naphtha
    (B) Kerosene
    (C) LSHS
    (D) Furnace oil

10. Catalyst used in the catalytic polymerization is
    (A) Phosphoric acid on kieselguhr
    (B) Aluminium chloride
    (C) Nickel
    (D) Vanadium pentoxide

11. 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

12. Crude topping column operates at __________ pressure.
    (A) Atmospheric
    (B) 10 atm
    (C) Vacuum
    (D) 3 atm

13. The most suitable solvent for deasphalting vacuum residue is
    (A) Propane
    (B) Methyl ethyl ketone
    (C) Doctor's solution
    (D) Methanol amine

14. A typical yield of diesel in straight run distillation of crude oil may be about __________ percent.
    (A) 8
    (B) 18
    (C) 28
    (D) 35

15. __________ base crude oil is also called asphaltic crude.
    (A) Paraffinic
    (B) Naphthenic
    (C) Mixed
    (D) Aromatic

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