Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?
(A) V2O5 & Cr2O3.
(B) Oxides of nitrogen & Cr2O3
(C) V2O5 on a porous carrier & oxides of nitrogen
(D) Oxides of nitrogen & V2O5 on a porous carrier
Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?
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