Industrial Chemistry

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1. How is desalting done?

  • by reacting with hydrogen in the presence of nickel catalyst
  • by physical process followed by electrostatic separation
  • by reacting with steam, then fractional distillation
  • By reacting with an acid to form water and base
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2. By what process can naphthas be converted into cyclic alkanes? Why do we do this?

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

3. 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

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

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

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

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