Smoke point of kerosene expresses its__________________?

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. 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...

3. 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...

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

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

5. Smoke point of kerosene is the_______________?

   A. Time after which smoking starts on burning B. Temperature at which smoking starts C. Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp D. None of these...

6. Smoke volatility index is equal to smoke point plus______________________?

   A. 0.42 × (% distilled at 204°C) B. 5 mm C. 0.84 × (% distilled at 204°C) D. 10 mm approximately...

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

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

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

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

9. 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...

10. Which is the most undesirable component in kerosene ?

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