Double Contact Double Absorption (DCDA) process is the most recent
process for the manufacture of
(A) Nitric acid
(B) Sulphuric acid
(C) Ammonium sulphate
(D) Hydrochloric acid
process for the manufacture of
(A) Nitric acid
(B) Sulphuric acid
(C) Ammonium sulphate
(D) Hydrochloric acid