Materials and Construction
Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of

Lead lined mild steel
Rubber lined mild steel
Aluminium
Cast iron

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Materials and Construction
Wrought iron is

High carbon iron
Highly resistance to acid corrosion
An alloy of iron, chromium & carbon
Malleable & ductile; and hence is used for chain links, hooks & couplings

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