Silicone rubber is not resistant to the corrosive action of (A) Sulphuric acid (10%) (B) Sulphuric acid (95%) (C) Ether (D) Both (B) and (C)

Silicone rubber is not resistant to the corrosive action of
(A) Sulphuric acid (10%)
(B) Sulphuric acid (95%)
(C) Ether
(D) Both (B) and (C)
by

1 Answer

Answer :

(D) Both (B) and (C)
by

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Polythene (low or high density) containers are not corroded by (A) Sulphuric acid (10%) at room temperature (B) Nitric acid (95%) at room temperature (C) Sulphur trioxide at 60°C (D) Any of these

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H2SO4 (< 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

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For handling sulphuric acid of 95% strength, the suitable material of construction for pipes is (A) Stainless steel (B) Cast iron (C) Aluminium (D) Nickel

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