Back to quiz

6. Which of the four methods of catalytic reformation uses only hydrogen?

  • Hydrocracking
  • Dehydrogenation
  • Isomerisation
  • Dehydrogenation or aromatisation

7. What is the catalyst in FCC?

  • Zeolite, containing mineral clays
  • catalyst with huge surface area to volume ration
  • Nickel catalyst
  • Co and Iron with promoter components

8. List in order products of FCC?

  • alkene, alkane or dihydrgen, carbonium ion, then carbenium ion
  • carbonium ion, alkane or dihydrogen, carbenium ion, alkene
  • carbenium ion, carbonium ion, alkane or dihydrogen, alkene
  • alkane or dihydrogen, carbenium ion, carbonium ion, alkene

9. What is wrong with heavy chain alkanes that we need to crack them?

  • not very reactive
  • Non renewable and little remaininget
  • expensive
  • labour intensive

10. What are the 3 main petrochemicals?

  • Ethene, propene, benzene
  • Ethene, butene, hexene
  • naphtha, ethene, hexene
  • Bezene. hydrogen gas and methane

11. What is S good for? And by what process?

  • None of the solutions
  • use in detergents and antibacterial soaps
  • making sufuric acid and fertilisers
  • For chemical warefare

12. Which method of catalytic reforming just converts cyclic compound to an aromatic producing hydrogen only (coproduct)?

  • Isomerisation
  • hydrocracking
  • Dehydrogenation
  • Aromatisation

13. How is desalting done?

  • by reacting with hydrogen in the presence of nickel catalyst
  • By reacting with an acid to form water and base
  • by physical process followed by electrostatic separation
  • by reacting with steam, then fractional distillation

14. Why do unbranched alkanes crack faster than branched alkanes?

  • branched chains have less surface contact areas compared to unbranched
  • Catalysts reject branched chain due to poor size
  • branched chains have less intermolecular forces

15. Which of the four methods of catalytic reforming requires Pt and then hydrogen?

  • hydrocracking
  • Aromatisation
  • Dehydrogenation
  • isomerisation

16. Why do we need to remove sulphur from crude oil?

  • it will accelerate the process of corrosion only
  • Create carcinogens
  • Will creat sulfuric acid when undergone certain processes and poison catalysts
  • it will deactivate the catalysts used in the further processes only

17. What are the 3 types of cracking? List in terms of which is lastest

  • fluid catalytic cracking, steam cracking, thermal cracking
  • thermal cracking, steam cracking, fluid catalytic cracking
  • steam cracking, thermal cracking, fluid catalytic cracking
  • steam cracking, fluid catalytic cracking, thermal cracking

18. By what process is sulphur removed and then recovered?

  • Hydrodesulphurisation and Fischer Tropsch process respectively
  • hydrodesulphurisation and Clause process respectively
  • Clause and hydrodesulphurisation respectively
  • Fischer Tropsch process and steam formation

19. By what process can naphthas be converted into cyclic alkanes? Why do we do this?

  • Gasification to form syngas
  • Catalytic reforming, higher octane value
  • Steam reformation, so we can produce hydrogen
  • Fischer Tropsch process, so it can be turned into short chain alkanes