Presence of traces of arsenious oxide (As2O3) in the reacting gases SO2 and O3 in presence of plantinised asbestos in contact process acts as
A. catalytic promoter
B. catalytic poison
C. dehydrating agent
D. drying agent
Answer:C
Presence of traces of arsenious oxide (As2O3) in the reacting gases SO2 and O3 in presence of plantinised asbestos in contact process acts as
A. catalytic promoter B. catalytic poison C. dehydrating agent D. drying agent