The most suitable solvent for deasphalting vacuum residue is_____________________?

Related Mcqs:

1. Solvent used in the deasphalting process is ______________________?

   A. Furfural
   B. Phenol
   C. Propane
   D. Hexane

2. Which of the following is used as a solvent in deasphalting of petroleum products ?

   A. Furfural
   B. Propane
   C. Methyl ethyl ketone
   D. Liquid sulphur dioxide

3. Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of ____________________?

   A. Thermal cracking
   B. Gum formation
   C. Coking
   D. Discoloration

4. Road grade bitumen is produced from vacuum residue by its ____________________?

   A. Aeration
   B. Pyrolysis
   C. Hydrogenation
   D. Steam reforming

5. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil__________________?

   A. Gives higher yield of petrol
   B. Lower octane number of petrol
   C. Higher sulphur content in the product
   D. Higher gum forming material in petrol

6. The vacuum maintained in vacuum distillation unit for reduced crude is about _______________ mm Hg?

   A. 1.2
   B. 12
   C. 120
   D. 700

7. Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about _______________ mm Hg (absolute)?

   A. 5-10
   B. 30-80
   C. 150-250
   D. 350-400

8. Vacuum maintained in the vacuum distillation column in oil refinery is in the range of about ________________ mm Hg absolute?

   A. 1 to 5
   B. 30 to 80
   C. 250 to 350
   D. 450 to 500

9. ‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the _________________ of virgin naphtha into small boiling range cuts?

   A. Steam reforming
   B. Distillation
   C. Desulphurisation
   D. None of these

10. Solvent deoiling process is used for separating oil and soft wax from hard wax. Methyl isobutyl ketone and methyl ethyl ketone (MEK) are two commonly used deoiling solvents. Use of former as the deoiling solvent has the advantages of the____________________?

    A. Elimination of solvent drying facility
    B. Higher nitration temperature
    C. Lower solvent dilution ratio
    D. All A., B. & C.