Which is the most undesirable component in kerosene ?

Related Mcqs:

1. 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?

   A. 1 B. 20 C. 100 D. 500...

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

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

3. Which of the following is desirable in petrol (gasoline) but undesirable in kerosene ?

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

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

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

5. Pick out the wrong statement about the smoking tendency of various hydrocarbon constituents of kerosene ?

   A. Smoking tendency of hydrocarbons increases in the order: paraffins → isoparaffins → naphthenes → aromatics B. Smoking tendency of paraffins increases with decrease in its molecular weight C. Smoking tendency of naphthenes decreases with its increasing molecular weight & also on addition of double bond D. Smoking tendency of aromatics decreases with increase in...

6. 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...

7. Extractor temperature is maintained at -20°C in Edeleanu process to reduce the ______________ of kerosene?

   A. Smoke point B. Paraffins C. Aromatics D. Naphthenes...

8. Illuminating characteristics of kerosene is expressed by its_____________?

   A. Smoke point B. Aniline point C. Luminosity number D. Aromatic content...

9. 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...

10. Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatization by liquid SO2 extraction (Edeleanu process), its smoke point may become _______________________ mm?

    A. 5 B. 10 C. 25 D. 100...