Soft coke is not ___________________?

Related Mcqs:

1. Main use of soft coke is as _______________ fuel?

   A. Domestic
   B. Blast furnace
   C. Foundry
   D. None of these

2. 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.

3. 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

4. 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.

5. 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

6. 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

7. Coke having higher porosity has ___________________?

   A. Lower bulk density
   B. Lower strength
   C. Higher reactivity
   D. All A., B. and C.

8. Coking time in beehive coke oven is about ___________________?

   A. 12 hours
   B. 2-3 days
   C. One week
   D. Two weeks

9. The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?

   A. 1
   B. < 1
   C. > 1
   D. Unpredictable

10. Highly reactive coke have lower ___________________?

    A. Porosity
    B. Coke reactivity index (CRI)
    C. Critical air blast (CAB) value
    D. Both B. and C.