Question

Graphite is used as a lubricant in machines because ______.

Options

• it is a good conductor of electricity.

• it has a high melting point and slippery layers.

• its density ranges from 1.9 to 2.3 g/cm³.

• it is strong and soft.

Answer 1

Graphite is used as a lubricant in machines because it has a high melting point and slippery layers.