Question 13 Marks
What is a natural magnet? Name the chemical formula of compound present in it.
Answer
View full question & answer→Natural magnet: Magnet was discovered in a town of Magnesia in Asia Minor (Greece). Magnet is formed by a blackish rock known as magnetite. This occurs naturally in the earth's surface. A natural magnet is an ore of iron that attracts small pieces of iron, cobalt, and nickel towards it. Natural magnets are permanent magnetsThese have magnetic properties of attraction-repulsion and directive. It is usually an oxide of iron known as iron oxide.Chemical formula: Chemically the compound present in natural magnet is represented as Fe3O4.