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Question

Rusting of iron is termed as a permanent change because it:


Correct Answer
A
is irreversible
Your Answer
B
is reversible
Your Answer
C
occurs slowly
Your Answer
D
involves the formation of a new substance

Solution

The correct option is A is irreversible
During rusting, iron undergoes a series of changes and results in the formation of iron oxide (rust). This change cannot be reversed and is hence termed as a permanent change.

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