Question

Aluminium is known as wonder metal because ___________________.

• A. It consists of different colours
• B. It is used for various purposes
• C. More metal can be extracted from less ore
• D. It comprises various mixtures

Answer 1

The correct option is B It is used for various purposes

Aluminium is known as wonder metal because it is used for various purposes. It is a light weight metal having low density, but it is very strong. This is why it is used extensively in aircrafts. Aluminium also resists continuous oxidation. That’s why it is an excellent choice for mild-pH, water-based applications. Aluminium forms a very good protective coating of aluminium oxide. Aluminium can be produced in large quantities at low cost.