Related Questions

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
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
Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.
A 2.5
B 0.5
C 10
D 20
Flue gas from the heating chamber of byproduct coke ovens is removed by
A Forced draft fan
B Induced draft fan
C Steam ejector
D Natural draft
The coking process normally mostly used in Indian oil refineries is the __________ coking process.
A Delayed
B Flexi
C Fluid
D Contact
Prime coking coal is always blended with medium or non- coking coal before ear-bonisation
A To check against its excessive swelling during heating, which may exert high pressure and damage coke oven walls
B Because, it alone produces unreactive coke
C Both A & B
D Neither A nor B
Beehive coke ovens are made of __________ bricks.
A Silica
B Fireclay
C Silicon carbide
D Corundum
Coking time in beehive coke oven is about
A 12 hours
B 2-3 days
C One week
D Two weeks
Undercharging of coal in the by-product coke ovens results in
A Decrease in the c.v. of coke oven gas
B Increase in its throughput
C Increase in the c.v. of coke oven gas
D No change in the c.v. of coke oven gas
High rate of heating of coke ovens
A May damage its walls due to abrupt excessive swelling of coal
B Produces larger size coke
C Increases the time of carbonisation
D None of these

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