A. Should have high porosity
B. Should be brittle
C. Must contain moderate quantities of ash, moisture, sulphur and volatile matters
D. Should have low fusion point of its ash
Related Mcqs:
- Caking index of the coal blend used for the manufacture of metallurgical coke should be around__________________?
A. 5
B. 21
C. 40
D. 48 - 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% - Presence of phosphorous in metallurgical coal__________________?
A. Is not undesirable
B. Reduces its calorific value
C. Badly affects the quality of steel
D. Increases its caking power - Volatile matter content of metallurgical coke may be around ______________ percent?
A. 1-2
B. 10-15
C. 22-26
D. 30-33 - Sulphur in metallurgical coal__________________?
A. Contributes to its heating value
B. Affects the quality of steel produced as cracks develop on the surface while rolling the steel
C. Both A. and B.
D. Neither A. nor B. - A good metallurgical coke should have very low__________________?
A. Sulphur & phosphorous content
B. Porosity
C. Fusion point of its ash
D. Hardness & strength - 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 - Quantity of coke produced from metallurgical coal may be around _____________ percent?
A. 30
B. 50
C. 75
D. 95 - 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 - Main constituent of the gas produced from a gobar gas plant is___________________?
A. CO2
B. CH4
C. H2
D. CO
