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Question 30Asked in RRB ALP CBT-1, 18 Feb 2026, Shift 2 (12:30 PM)

A metal object exposed to a humid environment starts corroding. Which of the following methods would be the most effective and long-lasting in preventing…

A metal object exposed to a humid environment starts corroding. Which of the following methods would be the most effective and long-lasting in preventing corrosion?
  1. AApplying a single coat of paint
  2. BCoating with a more reactive metal like zinc
  3. CWrapping the metal with a dry cloth to prevent moisture exposure
  4. DPeriodically wiping the surface with oil
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Correct answer: (B) Coating with a more reactive metal like zinc

From RRB ALP CBT-1 PYQ 18 Feb 2026, Shift 2 (12:30 PM)

This is question 30 of RRB ALP CBT-1 PYQ 18 Feb 2026, Shift 2 (12:30 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.