DnT- Protecting Metal

Question 1

Rust occurs when

Answer 1

A metal slowly changes into a new substance while the original metal is eaten away

Question 2

Cause of rust

Answer 2

Exposure to oxygen and moisture

Corrosion

Question 3

To prevent corrosion of static metal

Answer 3

You can paint or galvanize the metal

Question 4

2 kinds of protection

Answer 4

Physical and chemical

Question 5

To protect metal moving parts

Answer 5

One must apply oil or grease that lubricates while protecting