Properties of Lubricants

An ideal lubricant should have high boiling point

• True

• False

An ideal lubricant should have high freezing point

• True

• False

The lubricants used at higher speed are of

• Higher Viscosity

• Lower Viscosity

An ideal lubricant should have

• High viscosity index

• Low viscosity index

The ability of lubricants to resist breakdown at high temperatures is known as

• Viscosity index

• Pour point

• Thermal stability

• Flash point

The temperature at which the oil sparks, but a flame is not sustained is called as

• Fire point

• Flash point

• Pour point

The temperature at which the oil sparks and flame is sustained is called as

• Fire point

• Flash point

• Pour point

The lowest temperature at which a lubricant will flow

• Flash point

• Pour point

• Fire point

An ideal lubricant should have

• High carbon residue

• Low carbon residue

Lubricants can be used as

• Cutting fluid

• Cooling Agent

• Rust and corrosion inhibitors

• All of the above