Question

Water on a smooth floor can make you slip . This means water is also a lubricant . Can you think of reasons why oil and grease , and not water , are used in machines as a lubricant ? Hint think of evaporation and corrosion

Answer 1

Explanation:

1. oils and grease are the materials used in machine
2. they contain minerals which are more fluent than that of water
3. it contains minerals which make the machines run faster
4. as the heating point of oil and grease is quite low it creates heat in machines and help them to manufacture products as quickly as it could
5. it also helps machines from getting rusted and as the water contains molecules of oxygen it undergoes oxidation reaction and rusts the machines .
6. hence oils and grease is used in machines rather than water