Oil Refinery Engineering Objective Type Questions - Set 08 - ObjectiveBooks

Oil Refinery Engineering Objective Type Questions - Set 08

Practice Test: Question Set - 08

1. Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about __________ mm Hg absolute.
    (A) 1 to 5
    (B) 30 to 80
    (C) 250 to 350
    (D) 450 to 500

2. In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction
    (A) Heavy distillates
    (B) Intermediate distillates
    (C) Light ends
    (D) Residues

3. Paraffins are desirable in lubricating oil, as it has got high
    (A) Viscosity
    (B) Viscosity index
    (C) Smoke point
    (D) Pour point

4. Which is almost absent in crude petroleum?
    (A) Olefins
    (B) Mercaptans
    (C) Naphthenes
    (D) Cycloparaffins

5. Platforming is a __________ process.
    (A) Moving bed
    (B) Fluidized bed
    (C) Non-regenerative & fixed bed
    (D) Regenerative

6. Hydrocracking employs
    (A) High pressure & temperature
    (B) Low pressure & temperature
    (C) High pressure and low temperature
    (D) High temperature and low pressure

7. With increase in the molecular weight of aromatic present in kerosene, its smoking tendency
    (A) Increases
    (B) Decreases
    (C) Remain same
    (D) Is unpredictable

8. Pick out the wrong statement.
    (A) Higher specific gravity of petroleum products means higher C/H ratio
    (B) Aromatics have lower specific gravity than corresponding paraffins
    (C) Hydrocarbons of low specific gravity (e.g., paraffins) possess the maximum thermal energy per unit volume
    (D) Hydrocarbons of high specific gravity (e.g., aromatics) possess the maximum thermal energy per unit weight

9. Pick out the wrong statement.
    (A) Alkylation produces a larger iso-paraffin (having higher octane number) from the reaction of an olefin with smaller iso-paraffin
    (B) Catalytic alkylation processes use HF, AlCl3 & H2SO4 as Catalysts
    (C) All the alkylation processes use very high temperature (> 1000°C)
    (D) Gasoline having an octane number of 90 can be produced by alkylation process

10. Which of the following is a Naphthene?
    (A) Butene
    (B) Butadiene
    (C) Cyclohexane
    (D) Acetylene

11. Which of the following is a non-regenerative fixed bed catalytic reforming process?
    (A) Hydroforming
    (B) Thermofor catalytic reforming
    (C) Platforming
    (D) Hyperforming

12. Preheating temperature of medium viscosity furnace oil for better atomization through burner is about __________ °C.
    (A) 50
    (B) 70
    (C) 90
    (D) 140

13. Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has
    (A) High pour point and low smoke point
    (B) Low viscosity index
    (C) High self-ignition temperature
    (D) All (a), (b) and (c)

14. Which of the following has the highest flash point of all?
    (A) Diesel
    (B) Kerosene
    (C) Petrol
    (D) Furnace oil

15. Which of the following is desirable in petrol (gasoline) but undesirable in kerosene?
    (A) Paraffins
    (B) Aromatics
    (C) Mercaptans
    (D) Naphthenic acid

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