Question

Which of the following is the factor of influence the corrosion? a) Reactivity of metals b) Presence of impurities c) Strain in the metal d) All of the above​

Answer 1

d) all of the above


Hope it helps

Answer 2

The factors that influence the corrosion are all the above (OPTION D) i.e. Reactivity of the metal, the presence of impurities, and the strain in the metal.

Explanation

CORROSION -

• The natural irreversible phenomenon that causes the conversion of refined metal to form a stable compound.
• It involves the formation of the oxide, hydroxide, carbonate, or sulphide of the respective element.
• It is a diffusion-controlled process that occurs on exposed metal surfaces.
• The factors that promote corrosion are -

1. Reactivity of metals - Active metals tend to corrode more easily than less reactive metals.  

2. Presence of impurities - Impurities enhance the rate of corrosion as pure metals do not corrode.

3. Strain in the metals - Corrosion occurs at a faster rate on cracks, bends, nicks, and cuts on the metal surface.

4.  Temperature - Higher the temperature more is the rate of corrosion.

5. Presence of air and moisture - Air influences and leads to faster corrosion.

6. Presence of acid - Acid accelerates the process of corrosion on the metal surface.