Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ________________ mg/kg of kerosene?

Related Mcqs:

1. Smoke point of a good burning kerosene may be around _______________ mm?

   A. 0-5 B. 20-25 C. 60-75 D. 100-120...

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. Good quality kerosene should have__________________?

   A. Low smoke point B. High smoke point C. High aromatics content D. Low paraffins content...

4. Which is the most desirable component of a good quality kerosene ?

   A. i-paraffins B. Aromatics C. n-paraffins D. Naphthenes...

5. A typical yield of kerosene in straight run distillation of crude oil may be about __________________ percent?

   A. 4 B. 10 C. 18 D. 26...

6. Smoke point of a test sample of kerosene is found to be 15 mm. On removal of ________________ from it, the smoke point rises to 25 mm?

   A. n-paraffins B. Olefins C. Aromatics D. None of these...

7. Highest quality bitumen is produced from the __________________ crude oil?

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

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

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

9. Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?

   A. Aromatics B. Mercaptans C. Paraffins D. Naphthenic acid...

10. Dearomatization of kerosene (by liquid sulphur dioxide extraction) is done to________________?

    A. Increase its smoke point B. Improve its oxidation stability C. Decrease the breathing loss D. None of these...