Petroleum Refinery Engineering pdf Questions Answers - Set 03 - ObjectiveBooks
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Petroleum Refinery Engineering pdf Questions Answers - Set 03

Practice Test: Question Set - 03


1. Presence of aromatics in
    (A) Diesel increases its cetane number
    (B) Kerosene increases its smoke point
    (C) Petrol increases its octane number
    (D) All (a), (b) and (c)

2. The best method of determining sulphur in crude oil is by the __________ method.
    (A) Kjeldahl
    (B) Dumas
    (C) Bomb calorimeter
    (D) Junkers calorimeter

3. Which of the following is the most widely used cracking process in oil refineries?
    (A) Dubbs process
    (B) T.C.C. moving bed process
    (C) Fluidised bed catalytic cracking process
    (D) Houdry's fixed bed process

4. Which of the following reactions is undesirable in the production of catalytically reformed gasoline?
    (A) Dehydrogenation of Naphthene
    (B) Dehydrogenation of lower paraffins
    (C) Dehydrocyclization of higher paraffins
    (D) Isomerization of paraffins

5. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil
    (A) Gives higher yield of petrol
    (B) Lower octane number of petrol
    (C) Higher sulphur content in the product
    (D) Higher gum forming material in petrol

6. Pick out the wrong statement.
    (A) A pale color of petroleum product indicates lower viscosity
    (B) Color of petroleum products indicates the degree of refinement
    (C) Lighter petroleum distillates are lighter in color than the heavier residual oils
    (D) Fluorescence of oils helps to detect its adulteration

7. Which of the following is an additive used for improving the cetane number of diesel?
    (A) Tetraethyl lead
    (B) Tetramethyllead
    (C) Ethyl nitrate or acetone
    (D) None of these

8. Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of
    (A) Thermal cracking
    (B) Gum formation
    (C) Coking
    (D) Discoloration

9. Octane number of gasoline produced by two stage fluidized catalytic cracking process is
    (A) 80
    (B) 87
    (C) 92
    (D) 97

10. Reforming converts
    (A) Olefins into paraffins
    (B) Naphthenes into aromatics
    (C) Naphthenes into olefins
    (D) Naphthenes into paraffin

11. Feedstock for polymerization is
    (A) Naphtha
    (B) Cracked gases rich in C2 & C4 olefins
    (C) Low boiling aromatics
    (D) None of these

12. Which of the following has the minimum °API gravity of all?
    (A) Diesel
    (B) Kerosene
    (C) Petrol
    (D) Furnace oil

13. Olefins are
    (A) Saturated hydrocarbons
    (B) Unsaturated cyclic compounds (hydrocarbons)
    (C) Present in substantially good quantity in crude petroleum
    (D) None of these

14. Natural gas recovered along with crude oil from oil wells is called wet natural gas which has a higher __________ compared to the dry natural gas.
    (A) Unsaturated hydrocarbon content
    (B) Calorific value
    (C) Quantity of propane
    (D) Quantity of butane

15. Which of the following processes is used for the production of petroleum coke?
    (A) Stabilization
    (B) Visbreaking
    (C) Cracking
    (D) Reforming

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