Concentrated HCl at 30Â°C can be stored in a vessel made of

1.	Concentrated HCl at 30Â°C can be stored in a vessel made of
A.	PTFE and porcelain.
B.	cast iron and aluminium.
C.	stainless steel and high silicon cast iron.
D.	none of these.
Answer» B. cast iron and aluminium.

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