_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?

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. During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) ________________ with increase in the amount of water?

   A. Decreases
   B. Increases
   C. Remains unchanged
   D. Decreases linearly

3. _____________ base crude oil is also called asphaltic crude?

   A. Paraffinic
   B. Naphthenic
   C. Mixed
   D. Aromatic

4. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________________ ptb (pounds per thousand barrel) ?

   A. 0.03
   B. 3
   C. 35
   D. 70

5. In the atmospheric pressure crude distillation, the content of _____________ from lighter fraction to heavier ones?

   A. Sulphur increases
   B. Sulphur decreases
   C. Nitrogen decreases
   D. None of these

6. 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

7. Sour crude means the ________________ bearing crude?

   A. Asphalt
   B. Sulphur compounds
   C. Wax
   D. Nitrogen compounds

8. 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

9. Carbon percentage (by weight) in crude petroleum may be about_________________?

   A. 65
   B. 75
   C. 85
   D. 95

10. Hydrogen percentage (by weight) in crude petroleum may be about __________________?

    A. 5
    B. 15
    C. 25
    D. 35