Hydrofining is the most recent and effective method for the____________________ ?

Related Mcqs:

1. In Hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen_________________?

   A. Enhances the desulphurisation process
   B. Minimises coke formation
   C. Both A. and B.
   D. Neither A. nor B.

2. Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl isobutyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the____________________?

   A. Elimination of solvent drying facility
   B. Higher nitration temperature
   C. Lower solvent dilution ratio
   D. All A., B. & C.

3. The best method of determining sulphur in crude oil is by the _______________ method?

   A. Kjeldahl
   B. Dumas
   C. Bomb calorimeter
   D. Junkers calorimeter

4. Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10-15 kgf/cm2 is maintained during cracking mainly to__________________?

   A. Increase the yield of light distillates
   B. Suppress coke formation
   C. Enhance the octane number of gasoline
   D. Reduce gum content in gasoline

5. Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil ?

   A. Modern theory
   B. Carbide theory
   C. Engler theory
   D. All A., B. and C.

6. An upper limit of oil content is limited to about ______________ percent for achieving efficient and satisfactory level of wax sweating?

   A. 5
   B. 15
   C. 40
   D. 60

7. Electrical desalting of crude oil removes the _______________ impurities?

   A. Oleophilic
   B. Oleophobic
   C. Both A. and B.
   D. Neither A. nor B.

8. Which of the following has the highest octane number ?

   A. Aromatics
   B. i-paraffins
   C. Naphthenes
   D. Olefins

9. Pick out the correct statement about catalytic polymerisation ?

   A. H2SO4 polymerisation process gives gasoline rich in unsaturates
   B. In H2SO4 polymerisation, H3PO4 is always used with 2% steam to prevent meta & ortho
   H3PO4 formation, which are inactive
   C. Both A. and B.
   D. Neither A. nor B.

10. Straight run petrol as compared to methyl/ethyl alcohol has_________________?

    A. Lower calorific value
    B. Lower octane number
    C. Higher specific gravity
    D. Higher ignition temperature