63ʳᵈ B.P.S.C. (Pre) 2017
Galvanized iron pipes have a coating of :
aZinc✓ Correct
bMercury
cLead
dChromium
eNone of the above/More than one of the above
Explanation
The method of protecting iron and steel from rust by coating them with a thin layer of zinc is called galvanization.
general-geography