Question

Which of the following is true about rusting?

• A. rusting will take place in absence of water
• B. rusting will not take place in the presence of water and air
• C. rusting will take place in absence of air
• D. none of these

Answer 1

The correct option is D

none of these

The explanation of the correct option:

(D)none of these

Rusting

• Corrosion of elemental iron and its alloys, such as steel, is known as rusting.
• If a piece of iron is in the open for some time, It develops a brownish coating.
• This process is called rusting and the substance is called rust.

In the rusting process, iron reacts with water and oxygen and forms hydrated iron oxide so none of these options are true.

The explanation of incorrect options:

Option A:

Rusting of iron takes place in the presence of moisture and air, so the presence of water is important for the rusting process.

Option B:

Rusting will take place in the presence of water and air.

Option C:

Rusting of iron takes place in the presence of moisture and air, so the presence of air is important for the rusting process.

Hence, option (D) is the correct option. None of these options is true about rusting.