10. In fixed bed catalytic cracking, the catalyst is reactivated after every __________
Correct Answer is : 8-10hrs
11. In vapour phase thermal cracking, the temperature achieved is ___________
Correct Answer is : 600-650oC
12. In moving bed catalytic cracking, the catalyst is in the form of ____________
Correct Answer is : fine powder
13. The gasoline vapours are purified by __________
Correct Answer is : stabilization
14. The pressure applied in vapour phase cracking is __________
Correct Answer is : 10-20kg/cm2
15. The pressure applied in fixed-bed catalytic cracking is __________
Correct Answer is : 1.5kg/cm2
16. Removal of water is done by______
Correct Answer is : Cottrells process
17. Crude oil is in the form of_______
Correct Answer is : emulsion of oil and brine
18. To remove sulphur compounds from petroleum, it is treated with_____
Correct Answer is : copper oxide
19. The scales formed during the removal of harmful impurities can be removed by_____
Correct Answer is : dehydration
20. During refining the petroleum, in fractional distillation, what is the temperature in still?
Correct Answer is : 400oC
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