Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

V₂O₅ on a porous carrier & oxides of nitrogen

Oxides of nitrogen & V₂O₅ on a porous carrier

Catalyst used in the manufacture of sulphuric acid by chamber & conta

1.	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
Answer» E.