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H2SO4 (< 50% concentration) is corrosive to | |
A. | aluminium, mild steel, stainless steel, concrete & tin. [Correct Answer] |
B. | copper, cast iron & high silicon iron (14% Si). [Wrong Answer] |
C. | rubber (butyl and hard), silicone rubber & teflon. [Wrong Answer] |
D. | glass, graphite, porcelain & stoneware. [Wrong Answer] |