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__________________?

Related Mcqs:

Which is almost absent in crude petroleum ?

A. Olefins B. Mercaptans C. Naphthenes D. Cycloparaffins...

The terminology used for the bottom most product from the vacuum crude distillation unit is______________?

A. Residual crude B. Residuum C. Reduced crude D. Petrolatum...

Products drawn from the top to bottom of the crude oil distillation column has progressively increasing ___________________?

A. Boiling points B. Molecular weight C. C/H ratio D. All A., B. and C....

Pick out the wrong statement ?

A. Iso-paraffin crack faster than n-paraffin. B. Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic C. Rate of decomposition of olefins in catalytic cracking is slightly slower than the thermal cracking D. None of these...

____________ is not an important refinery process for upgrading the quality of lubricating oil ?

A. Deoiling B. Solvent refining C. Clay treatment D. Hydro-treatment...