Related Questions

Carbonization of coal consists of
A Drying and crushing the coal to a fine powder
B Moulding the finely ground coal under pressure with or without a binding material
C Heating the wood with a limited supply of air to temperature not less than 280°C
D None of the above
Carbonization of coal is the process of
A Pulverizing coal in inert atmosphere
B Heating wood in a limited supply of air at temperatures below 300°C
C Strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D Binding the pulverized coal into briquettes
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
Hard coke is produced by carburization of coal at
A Atmospheric temperature
B 500-600°C
C 700-850°C
D 950-1100°C
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
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
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
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 of the above
The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always
A 1
B > 1
C Unpredictable

Next steps