Efficient burning of anthracite coal requires (A) Low preheat of air (B) Fine grinding (C) High excess air (D) All (A), (B) and (C)

Efficient burning of anthracite coal requires
(A) Low preheat of air
(B) Fine grinding
(C) High excess air
(D) All (A), (B) and (C)
by

1 Answer

Answer :

(B) Fine grinding
by

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