Hydrogen gas is not produced commercially (for nitrogenous fertiliser
manufacture) by
(A) Iron-steam reaction
(B) Electrolysis of water
(C) Steam reforming of naphtha
(D) Its cryogenic separation from coke oven gas
manufacture) by
(A) Iron-steam reaction
(B) Electrolysis of water
(C) Steam reforming of naphtha
(D) Its cryogenic separation from coke oven gas