Question

17. What makes the steps of foot over‐bridges at Railway stations to wear outslowly?

Answer 1

Those are the degradation or the corrosion of the metals . These foot bridges are usually made of iron which corrodes in the presence of water and air. It then forms a red flaky substance called rust that literally eats the metal. Mark me as the brainliest plssss

Answer 2

Answer:

Those are the degradation or the corrosion of the metals . These foot bridges are usually made of iron which corrodes in the presence of water and air. It then forms a red flaky substance called rust that literally eats the metal. Mark me as the brainliest plssss

Explanation: