Question

what causes corrosion?​

Answer 1

From the given question the correct answer is:

• Corrosion always occurs in metals.
• Corrosion is the process in which metals react with another substance like water, oxygen, hydrogen, an electrical current, or even dirt and bacteria.
• Iron is the most common metal which highly reactive with other substances.
• in iron,  corrosion occurs when it is exposed to oxygen and the presence of water
• The red-colored iron oxide creates, that is called rust.
• To protect the iron from rust iron should paint

Answer 2

Causes Corrosion:

• As we know that the Corrosion always occurs in metals.
• So, the Corrosion is the process in which metals react with another substance like water, oxygen, hydrogen, an electrical current, or even dirt and bacteria.
• we know the Iron is the most common metal which highly reactive with other substances.
• in iron,  corrosion occurs when it is exposed to oxygen and the presence of water
• So, The red-colored iron oxide creates, that is called rust.
• As we know that To protect the iron from rust iron should paint.