“Micum Index” of a coke is a measure of its___________________?

Related Mcqs:

1. 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%

2. Shatter index of the coke is a measure of its___________________?

   A. Strength
   B. Bulk density
   C. Reactivity

   D. None of these

3. Narrow coke ovens as compared to wider coke ovens_________________?

   A. Produce smaller coke
   B. Produce stronger coke
   C. Require less time of carbonisation
   D. All A., B. and C.

4. Width of the coke oven towards coke side is slightly more than that on pusher side to____________________?

   A. Facilitate easy discharging of coke as it swells during carbonisation
   B. Facilitate uniform heating of the oven
   C. Increase the output of the coke
   D. None of these

5. Coke made in narrower by-product coke ovens (as compared to wider ovens) is _____________________?

   A. Less reactive
   B. Stronger
   C. Smaller in size
   D. All A., B. & C.

6. Degree of carbonisation of coal during coke making can be roughly judged by the ______________ of the coke produced?

   A. Colour
   B. Moisture content
   C. Ash content
   D. Volatile matter

7. During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the _______________ of the mass?

   A. Density
   B. Porosity
   C. Electrical resistivity
   D. None of these

8. Critical Air Blast (CAB) value of coke is a direct measure of its__________________?

   A. Reactivity
   B. Hardness
   C. Strength
   D. None of these

9. Caking index of coal blend used for blast furnace coke making is about_________________?

   A. 8
   B. 12
   C. 22
   D. 36

10. 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