*/*_H‚Äö√á√áSO‚Äö√á√ë (< 50% concentration) is corrosive to?

Copper, cast iron & high silicon iron (14% Si)

Aluminium, mild steel, stainless steel, concrete & tin

Rubber (butyl and hard), silicone rubber & teflon

Glass, graphite, porcelain & stoneware

*/*_H‚Äö√á√áSO‚Äö√á√ë (< 50% concentration) is cor

1.	/_H‚Äö√á√áSO‚Äö√á√ë (< 50% concentration) is corrosive to?
A.	Aluminium, mild steel, stainless steel, concrete & tin
B.	Copper, cast iron & high silicon iron (14% Si)
C.	Rubber (butyl and hard), silicone rubber & teflon
D.	Glass, graphite, porcelain & stoneware
Answer» B. Copper, cast iron & high silicon iron (14% Si)