Nitrogen in coal
(A) Is present upto 1-2%
(B) Comes from protein in parent vegetable matter
(C) Is recovered as ammonia during its carbonisatio
(D) All (A), (B) and (C)
(A) Is present upto 1-2%
(B) Comes from protein in parent vegetable matter
(C) Is recovered as ammonia during its carbonisatio
(D) All (A), (B) and (C)