Final answer:
The statement about ferrous metal not containing iron and being non-magnetizable is false; ferrous metals like iron and steel do contain iron and can be magnetized. Also, dropping a bar magnet through a copper tube does induce an electric current, and it is recommended to keep permanent magnets away from credit cards with magnetic strips.
Step-by-step explanation:
The statement that ferrous metal does not contain any iron and therefore cannot be magnetized is False. Ferrous metals are actually those that contain iron and are typically magnetizable. For instance, common ferrous metals include iron and steel, both of which can be attracted to magnets and can also be magnetized themselves. Examples such as iron becoming magnetized by proximity to a magnet and steel retaining its magnetism longer illustrate this property.
In relation to ferromagnetic materials, it is also noteworthy that if you drop a bar magnet through a copper tube, it indeed induces an electric current in the tube, which is demonstrated by a slower descent due to electromagnetic damping. Therefore, the correct answer to the question regarding the bar magnet and the copper tube is True.
It is important to keep magnetic materials such as permanent magnets away from objects like credit cards with magnetic strips, as they can demagnetize the strips and render the cards nonfunctional, making this advice True.