In the corrosion experiment you will prepare iron nails which are in good contact with a piece of another metal. How will you do this?

Question

Answer

Wrap a piece of the metal around a cleaned iron nail.

Answer

Wrap a piece of the metal around a regular iron nail.

Answer

Use a hammer and a cleaned nail to punch a hole through the metal and then insert the nail through the hole.

Answer

Use a hammer and a regular nail to punch a hole through the metal and then insert a cleaned nail through the hole.

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