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Railways PYQCBT 1 2016

RRB NTPC · Question 89

What is galvanized iron?

  1. A form of steel

  2. Zinc coated iron

  3. Pig iron

  4. Iron ore

Show answer & explanation

Answer: (B) Zinc coated iron

Explanation

Galvanised iron is iron or steel coated with a thin layer of zinc. The zinc protects the iron from rusting, even if scratched, because zinc corrodes first.