Related Questions

A good metallurgical coke
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
Caking index of the coal blend used for the manufacture of metallurgical coke should be around
A 5
B 21
C 40
D 48
Volatile matter content of metallurgical coke may be around __________ percent.
A 1-2
B 10-15
C 22-26
D 30-33
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
In a group of 60 people, 27 like coke and 42 like borhani and each person likes at least one of the two drinks How many people like both coke and borhani?
A 9
B 129
C 69
D 15
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
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 of the above
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
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

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