Related Questions

Quantity of coke produced from metallurgical coal may be around __________ percent.
A 30
B 50
C 75
D 95
Caking index of the coal blend used for the manufacture of metallurgical coke should be around
A 5
B 21
C 40
D 48
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
Presence of phosphorous in metallurgical coal
A Is not undersirable
B Reduces its calorific value
C Badly affects the quality of steel
D Increases its caking power
Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg.
A 1000
B 4000
C 6000
D 8000
Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about
A 0.1
B 1
C 2.5
D 3.5
Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
A acid rain
B brackish water
C forest fire
D soil pollution
Sulphur in coal results in
A Corroding air heaters
B Spontaneous combustion during coal storage
C Facilitating ash precipitation
D All of the above
Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of
A MgO & Na2CO3
B MgSO4 & BaCl2
C BaSO4 & NaCl
D MgCO3 & NaCl
The fuel mostly used in cement industry and in metallurgical processes is
A wood charcoal
B bituminous cock
C pulverized coal
D coke

Next steps