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chapter 5 Changes Around Us: Physical and Chemical -Part 4

An iron nail is left in dry air and another in moist air. Which is expected to rust faster?

Type: MCQ • Marks: 1
An iron nail is left in dry air and another in moist air. Which is expected to rust faster?
Options
A. Nail in moist air
B. Neither because iron cannot react
C. Both never rust
D. Nail in dry air always
Explanation
Water and oxygen promote rusting, so moist air speeds it up.
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