GEOLOGY

Detailed explanation-1: -Answer. Explanation: Because both safety pin and nail are conductors, they will move by a magnet. On the other hand, toothpick is a insulator, so it won’t move.

Detailed explanation-2: -A car bumper, plastic comb and glass tumbler do not have any application where a magnet is used.

Detailed explanation-3: -Most metals (aluminum, copper, gold, lead, silver, zinc, etc.) are NOT attracted to a magnet.

Detailed explanation-4: -Magnets attract some metallic objects like iron and steel. They do not attract non-metallic objects like plastic, wood or sand. Q.

Detailed explanation-5: -Those materials which are attracted b a magnet are magnetic materials. Iron, Nickel, and Cobalt are the magnetic substances as objects made up of these materials are attracted by a magnet. Also, magnetic materials can be magnetized or we can say that magnetic materials can be converted into magnets.