1.

Pick out the wrong statement.:

A. Carburetted water gas is also called blue gas.
B. Coals are divided in four species according to their carbon content in Seylor's classification.
C. Carbonisation time in a by-product coke oven is about 16 hours.
D. Gross and net calorific value of a fuel is the same, if it does not contain hydrogen or hydrocarbons.
Answer» B. Coals are divided in four species according to their carbon content in Seylor's classification.


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