Volatile matter content of metallurgical coke may be around ______________ percent?

Related Mcqs:

1. 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

2. Volatile matter content in coking coal may be about _____________ percent?

   A. 1
   B. 7
   C. 22
   D. 46

3. Quantity of coke produced from metallurgical coal may be around _____________ percent?

   A. 30
   B. 50
   C. 75
   D. 95

4. Shatter index of metallurgical coke on 2 inches and 0.5 inch screen should be respectively around _______________ percent?

   A. 80 and 97
   B. 95 and 100
   C. 40 and 70
   D. 25 and 97

5. A coal having high volatile matter content will ________________?

   A. Give less yield of tar and gas on carbonisation
   B. Burn with a small non-smoky flame
   C. Have a very high calorific value
   D. None of these

6. A coal having higher volatile matter content, has lower_________________?

   A. Smoking tendency on burning
   B. Coke oven gas yield on carbonisation
   C. Chance of catching fire during storage in open space
   D. Ignition temperature

7. A coal having higher volatile matter content will necessarily have lower____________________?

   A. Ash fusion temperature
   B. Calorific value
   C. Ignition temperature
   D. Caking index

8. Ash content in the coke produced from a coking coal having 20% ash may be around _____________ percent?

   A. 6
   B. 12
   C. 18
   D. 24

9. Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?

   A. 5
   B. 21
   C. 40
   D. 48

10. Desirable “Micum Index” values of metallurgical coke are ___________________?

    A. M40 > 78% and M10 < 10%
    B. M40 > 4% and M10 10% and M10 98% and M10 < 2%