11. Which of the following theories of origin of petroleum does not explain the presence of nitrogen & sulphur compounds in crude oil?
12. Petroleum coke is used mainly in the
13. Maximum use of petroleum coke is in
14. Aniline point of the diesel is a measure of its __________ content.
15. Concentration of H2SO4 catalyst in alkylation is kept between 90 - 98%, because H2SO4 having concentration
16. Catalyst used in catalytic reforming is
17. Complete removal of __________ from gasoline is done by Unisol process using caustic soda and methyl alcohol.
18. The terminology used for the bottom most product from the vacuum crude distillation unit is
19. Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl iso-butyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the
20. Electrical desalting of crude oil removes the __________ impurities.
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