(A) Painted steel (X)
(B) Galvanised iron ()
(C) Case hardened steel (X)
(D) Lead lined reactor (X)
Answers: Galvanised iron
(A) Painted steel (X)
(B) Galvanised iron ()
(C) Case hardened steel (X)
(D) Lead lined reactor (X)
Answers: Galvanised iron
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