Practice Test: Question Set - 14
1. 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
2. Which of the following constituents present in petroleum is responsible for ash formation?
- (A) Nitrogen compounds
- (B) Organometallic compounds
- (C) Sulphur compounds
- (D) Oxygen compounds
3. The reservoir rock containing petroleum has
- (A) Low porosity
- (B) High permeability
- (C) High porosity
- (D) Both (b) and (c)
4. Polymerization
- (A) Produces i-octane from cracked gases containing
i-butane and butene
- (B) Causes olefins to combine with each other
- (C) Causes aromatics to combine with each other
- (D) Is aimed at producing lubricating oil
5. Which is an anticing compound?
- (A) Amyl nitrate
- (B) Alcohols
- (C) Mercaptans
- (D) Pyridine
6. Which of the following tests is not done for transformer oil?
- (A) Flash point and acid value
- (B) Aniline point
- (C) Dielectric strength
- (D) Copper strip corrosion test
7. Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is
- (A) 4
- (B) 3
- (C) 2
- (D) 1
8. In sweetening process, solutizer agent used with caustic alkali is
- (A) Potassium isobutyrate
- (B) Sodium plumbite
- (C) Methanol
- (D) Phenol
9. Waxy crudes are treated with chemical additives mainly to
- (A) Depress its pour point
- (B) Dissolve wax
- (C) Precipitate wax
- (D) Remove wax
10. Pick out the undesirable property for a solvent meant for dewaxing of lube oil.
- (A) Complete miscibility with oil
- (B) High solubility of wax in the solvent
- (C) Both (a) and (b)
- (D) Neither (a) nor (b)
11. Maximum use of petroleum coke is in
- (A) Adsorption refining operation
- (B) Fuel gas manufacture
- (C) Carbon electrode manufacture
- (D) Iron ore reduction
12. Older crude petroleum
- (A) Is light and better
- (B) Gives more distillates
- (C) Gives less tar
- (D) All (a), (b) and (c)
13. Crude oil is pumped by a __________ pump.
- (A) Gear
- (B) Centrifugal
- (C) Screw
- (D) Reciprocating
14. Pick out the wrong statement.
- (A) Aromatics have higher specific gravity than paraffins
- (B) Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100
ρ2) where, ρ is the specific gravity of the fuel at 15.5°C
- (C) Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg)
but lower GCV on volume basis (i.e., Kcal/liter)
- (D) Higher specific gravity of petrofuels means higher C/H ratio
15. Catalyst used in the isomerization is
- (A) Aluminium chloride
- (B) Alumina
- (C) Nickel
- (D) Phosphoric acid
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