1. Water
  2. Soluble oil
  3. Dry
  4. Heavy oils
4 views

1 Answers

Answer: Option 2

Soluble oil of the highest grade is used as a lubricant. It is used in metalworking industries as a cutting fluid for aluminum. For machining, tapping and drilling aluminum, it is superior to kerosene and various water-based cutting fluids.

4 views