A. Strength
B. Bulk density
C. Reactivity
D. None of these
Related Mcqs:
- 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 - “Micum Index” of a coke is a measure of its___________________?
A. Reactivity
B. Porosity
C. Bulk density
D. Hardness & strength - 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. - 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 - 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. - 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 - 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 - Critical Air Blast (CAB) value of coke is a direct measure of its__________________?
A. Reactivity
B. Hardness
C. Strength
D. None of these - 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% - Abrasion index of blast furnace coke should be around _____________ percent?
A. 20
B. 35
C. 55
D. 80