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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