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Question 71Asked in RRB JE CBT-1, 19 Feb 2026, Shift 3 (4:30 PM)

Iron nails are coated with zinc to prevent rusting. Even if the zinc layer is scratched,

Iron nails are coated with zinc to prevent rusting. Even if the zinc layer is scratched, rusting does not occur because —
  1. AZinc acts as a sacrificial anode and corrodes instead of iron.
  2. BZinc reacts with moisture to form a protective film
  3. CIron becomes stainless in the presence of zinc.
  4. DZinc forms a hard oxide layer.
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Correct answer: (A) Zinc acts as a sacrificial anode and corrodes instead of iron.

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 3 (4:30 PM)

This is question 71 of RRB JE CBT-1 PYQ 19 Feb 2026, Shift 3 (4:30 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.