A. Petroleum coke
B. Beehive coke
C. Foundry coke
D. Metallurgical coke
Related Mcqs:
- 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 - Higher percentage of ash in coal meant for the production of metallurgical grade coke ___________________?
A. Decreases the hardness of coke
B. Decreases the abrasion resistance of coke
C. Causes brittleness in steel
D. None of these - Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than _______________ °C is liable to form clinker?
A. 1100
B. 1250
C. 1350
D. 1400 - 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 - During coking of coal, the ash content (percentage)________________?
A. Increases
B. Decreases
C. Remain constant
D. None of these - Mineral matter, ‘M’ and ash percentage ‘A’ in coal are roughly related as_______________?
A. M = 1.8 A
B. M = 0.5 A
C. M = 1.1 A
D. M = A
