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PIMSO 2025 - Science - Primary 6 - National Round Question 7

PIMSO Science · PIMSO 2025 - Science - Primary 6 - National Round

Question 7

When an iron nail gets rusted, iron oxide is formed

Assume the rust remains attached to the nail.
  1. without any change in the weight of the nail.
  2. with decrease in the weight of the nail.
  3. with increase in the weight of the nail.
  4. without any change in color or weight of the nail.