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

Related Mcqs:

1. 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

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

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

3. Bottom product of atmospheric pressure crude oil distillation column is termed as________________?

   A. Reduced crude
   B. Heavy ends
   C. Asphalt
   D. Residuum

4. 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

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. Crude oil is subjected to vacuum distillation in the last stage, because_________________?

   A. High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may
   decompose
   B. Lighter/low boiling products are prone to thermal decomposition
   C. High purity products can be obtained thereby
   D. None of these

7. 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.

8. The main use of heavy gas oil produced by the vacuum distillation unit is as a_____________________?

   A. Blending component for kerosene
   B. Blending component for petrol
   C. Feedstock for fluid catalytic cracking unit
   D. None of these

9. Paraffin base crude oil as compared to asphalt base crude gives___________________?

   A. Higher yield of straight run gasoline
   B. Higher octane number gasoline
   C. Lower viscosity index lube oil
   D. Poorer yield of lube oil

10. Crude oils containing more than ____________ kg of total salts (expressed in terms of NaCl) per thousand barrel is called a ‘salty crude’ ?

    A. 1
    B. 5
    C. 15
    D. 25