Question
a.
Percentage of ash in coke produced from medium coking coal is more than that in coal.
b.
The calorific value (kcal/Nm³) of coke oven gas reduces on removal of hydrogen from it by cryogenic method.
c.
Ash is normally removed as 'flyash' in kopper-Totzek process of coal gasification.
d.
Coal based fertiliser plants in India at Talcher (Orissa) and Ramagundam (A.P) employ Kopper-Totzek process of coal gasification.
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