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

Related Mcqs:

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

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

2. 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

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. Solvent used in Edeleanu process is__________________?

   A. Furfural
   B. Propane
   C. Liquid SO2
   D. Phenol

5. Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses _______________ as catalyst?

   A. Bauxite
   B. Fuller’s earth
   C. Activated clay
   D. All A., B. & C.

6. Pressure & temperature maintained in catalytic cracking is about__________________?

   A. 2 atm & 500°C
   B. 10 atm & 500°C
   C. 30 atm & 200°C
   D. 50 atm & 750°C

7. The pressure (kg/cm2) and temperature (°C) maintained in electrical desalters for crude oil are respectively__________________?

   A. 10 and 120
   B. 1 and 200
   C. 50 and 250
   D. 10 and 300

8. 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 its molecular weight

9. Pyrolysis of kerosene or natural gasoline is done to produce mainly the___________________?

   A. Olefins and aromatics
   B. Lighter paraffins
   C. Stabilised gasoline
   D. Diesel

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

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