Which of the following coal gasification processes will produce gas having maximum methane content ?

Related Mcqs:

1. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

   A. 400-500
   B. 900-1000
   C. 1400-1500
   D. 1700-1800

2. Which of the following is a single stage, fixed bed high pressure coal gasification process ?

   A. Winkler process
   B. Kopper-Totzek process
   C. Lurgi Process
   D. None of these

3. Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?

   A. 2CO ↔ C + CO2
   B. CO + H2O ↔ CO2 + H2
   C. C + H2O ↔ CO + H2
   D. C + 2H2O ↔ CO2 + 2H2

4. A coal having high ratio of volatile matter to fixed carbon as compared to a coal having low ratio of volatile matter to fixed carbon _________________?

   A. Is less liable to spontaneous combustion on storage
   B. Is more difficult to ignite and produces a shorter flame
   C. Requires smaller combustion space and less secondary air
   D. None of these

5. The reaction, C + CO2 ↔ 2CO, taking place during coal gasification is called the ______________ reaction?

   A. Neumann reversal
   B. Shift conversion
   C. Boudouard
   D. Reduction

6. High pressure coal gasification is employed in ________________ process?

   A. Lurgi
   B. Kopper-Totzek
   C. Winkler
   D. None of these

7. High temperature in gasification of coal favours________________?

   A. High production of CO2
   B. Low production of CO2
   C. High production of CO
   D. Both B. and C.

8. A coal gasifier operating at 20 atm. (e.g. Lurgi gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having _____________________?

   A. Higher methane content and thus higher calorific value
   B. Higher carbon monoxide content
   C. Lower carbon dioxide content
   D. None of these

9. Explosion limit of blast furnace gas is 37 to 71% gas in gas-air mixture. It means that the blast furnace gas will explode when burnt in a confined space, if its concentration in the gas-air mixture is _______________ percent?

   A. 71%
   C. In between 37 & 71%
   D. None of these

10. Mineral matter content (M) and ash content A. in coal are approximately related as _______________?

    A. M = 1.1A
    B. M = A
    C. M = 1.5A
    D. M = 2A